Our carbon sinks are absorbing twice as much carbon dioxide as they used to

The term ‘carbon sink’ is becoming more common as we all gain the scientific education needed to deal with climate change and global warming 다운로드.

According to Wikipedia, carbon sinks can be both natural and artificial 다운로드. Both involve the process of absorbing carbon dioxide from the atmosphere, which is called carbon sequestration.

The main natural carbon sinks are the oceans and plants, and with our planet covered in so much water, the oceans are the biggest sinks on Earth 다운로드. The main artificial ones are landfills and the various carbon capture projects.

In those countries that follow the Kyoto Protocol, the use of artificial carbon sinks can serve as a way to offset other carbon use 다운로드.

Of course, as we are pumping more carbon into the atmosphere our natural carbon sinks are ingesting more carbon dioxide:

Nature has her own way of dealing with excess carbon dioxide 가톨릭성가 mp3. When human activities spew CO2 into the atmosphere, plants absorb more of it than usual, leading to profuse growth. The ocean, too, swallows more than it otherwise would g402. Many scientists fret that these so-called carbon sinks risk getting clogged up. Some even suggest that this has already started happening. – The Economist

Some even estimate that the amount of CO2 absorbed by the oceans and plants has doubled 다운로드. Nobody knows what this means, maybe it can continue and alleviate some of our carbon problems, or there could be a backlash effect.

For more on this, check out The Economist article, That Sinking Feeling 로그레거시.

 

Continue reading Our carbon sinks are absorbing twice as much carbon dioxide as they used to

The best video NASA has ever produced – ‘7 minutes of terror’ – landing a robot on Mars

 

On Aug 다운로드. 5 or Aug. 6, depending on which part of the country you’re in, the Curiosity spacecraft careening toward Mars will hit the Red Planet’s atmosphere, deploy a supersonic parachute and either land safely on the planet’s surface or perish 다운로드. It’s dramatic stuff, and NASA has produced this Hollywood-style YouTube video, complete with animation and suspenseful music, to preview the landing, evoke that drama and put viewers on the edge of their seats 다운로드.

As engineers explain, it will take seven minutes for Curiosity to travel from the edge of Mars’ atmosphere to the surface, going from a speed of 13,000 mph to zero 2010 엑셀 무료. “If any one thing doesn’t work just right, it’s game over,” engineer Tom Rivellini says.

Because Mars is so far away, it actually takes 14 minutes for the spacecraft’s signal to reach Earth 다운로드. So by the time we learn the spacecraft has hit the top of Mars’ atmosphere, Curiosity will have either have survived the landing or perished for a full seven minutes 패러렐 즈 무료 다운로드.

 

Source: Skye – 7 Minutes of Terror: NASA’s Dramatic Mars-Landing Preview

The era of micro-spacecraft is here – ultra small satellites are everywhere

There is big news on the small satellite front. From super-secret agencies to the U.S. military, academia, private firms, world space agencies, and NASA, ultra-small satellites are the big thing 클래 시 봇 다운로드.

In sizing up “smallsats,” there are a range of classifications in the less-than-500- kilogram department, be they minisatellites, microsatellites, nanosatellites, picosatellites, palm-size CubeSats, even the diminutive Femto satellite, weighing in at less than 100 grams 다운로드.

Cornell University has begun to delve into a postage stamp-size “satellite on a chip” design, called Sprite, envisioning a swarm of these tiny probes exploring planetary atmospheres for organic compounds n 스토어 영화.

“The knowledge of how to make and use smallsats has passed the tipping point,” Matt Bille told SPACE.com. “It exists worldwide and has fostered a global generation of satellite builders and engineers 웹서버 디렉토리 다운로드. It used to be only a few organizations could build a satellite. Now, a smart teenager with a CubeSat kit and a soldering iron is a space agency. We’ve only begun to grasp the implications of that.”

“The age of microspacecraft is on solid ground now.”

 

Source: Space.com – Small Satellites Prompt Big Ideas for Next 25 Years

 

 

Continue reading The era of micro-spacecraft is here – ultra small satellites are everywhere

World scientists – we can’t raise the temperature by more than two degrees Celsius

The official position of planet Earth at the moment is that we can’t raise the temperature more than two degrees Celsius.

Some context: So far, we’ve raised the average temperature of the planet just under 0.8 degrees Celsius, and that has caused far more damage than most scientists expected 다운로드. (A third of summer sea ice in the Arctic is gone, the oceans are 30 percent more acidic, and since warm air holds more water vapor than cold, the atmosphere over the oceans is a shocking five percent wetter, loading the dice for devastating floods.)

Scientists estimate that humans can pour roughly 565 more gigatons of carbon dioxide into the atmosphere by midcentury and still have some reasonable hope of staying below two degrees 다운로드.

We’re not getting any free lunch from the world’s economies, either. With only a single year’s lull in 2009 at the height of the financial crisis, we’ve continued to pour record amounts of carbon into the atmosphere, year after year 바둑 대국. In late May, the International Energy Agency published its latest figures – CO2 emissions last year rose to 31.6 gigatons, up 3.2 percent from the year before 다운로드.

  • America had a warm winter and converted more coal-fired power plants to natural gas, so its emissions fell slightly
  • China kept booming, so its carbon output (which recently surpassed the U.S.) rose 9.3 percent
  • Japanese shut down their fleet of nukes post-Fukushima, so their emissions edged up 2.4 percent 엑시트 1080p 다운로드.

 

Keep reading: Rolling Stone – Global Warming’s Terrifying New Math

 

 

Continue reading World scientists – we can’t raise the temperature by more than two degrees Celsius

Listen to the soundtrack for The Dark Knight Rises – free online!

As part of our countdown to the release of The Dark Knight Rises, we have a very special treat for you today. Below you can listen to the film’s Hans Zimmer soundtrack in its entirety, giving you a taste of the atmosphere and action you’re in for come July 20 어도비 플래시 다운로드.

Listen to The Dark Knight Rises soundtrack on Empire Online

Zimmer has, of course, worked on all three of Christopher Nolan’s Bat-films, having shared composition duties on Batman Begins and The Dark Knight with James Newton Howard 솝캐스트 다운로드. This time, however, he’s flying solo.

This soundtrack is released by Sony Classical on July 16, and will be available from Amazon and iTunes for your listening-in-posterity pleasure 다운로드. The Dark Knight Rises hits cinemas on July 20.

 

Source: Empire – The Dark Knight Rises Soundtrack 다운로드!

 

 

Continue reading Listen to the soundtrack for The Dark Knight Rises – free online 타이푼 다운로드!

How the astronauts on the International Space Station get back to our planet

This Sunday (July 1, 2012), three members of the International Space Station crew will return to Earth on board a Kazakhstan-bound Soyuz craft, after over six months in orbit 다운로드. Don Pettit and Andre Kuipers, two of the returning astronauts, and Joe Acaba, who arrived at the station in May, discuss life on board ISS, the visit of the Dragon capsule, and current activities in space 오토 캐드 키젠 다운로드.

FLORA LICHTMAN: Just another day at SCIENCE FRIDAY, calling space.

Station, this is National Public Radio 90년대 인기가요 다운로드. How do you hear me?

DON PETTIT: NPR, we hear you loud and clear.

***

LICHTMAN: Don Pettit, walk us through how you’ll get back to our planet this weekend 다운로드.

PETTIT: We will get in our Soyuz spacecraft and under the command of Oleg Kononenko, and Andre Kuipers will be flight engineer one or board engineer one, and I’m board engineer two dnw.exe 다운로드. And we work together to get this spacecraft back home, starting off with undocking.

We start off, we get inside, the close the hatch, we have to do a leak check, make sure the hatches don’t leak 다운로드. And then we strap in and undock, and then we do a de-orbit burn. And then as we hit the atmosphere, the spacecraft separates so that only the descent module comes through the atmosphere in one piece 다운로드.

And then our parachute comes out, and we go thump, roll, roll on the steppes of Kazakhstan.

Read, or listen, to the full interviewAstronauts Prepare For Departure

Continue reading How the astronauts on the International Space Station get back to our planet

MESSENGER sends first data back to Earth – uncovers ice on Mercury

For several years scientists have been begging to test their theories about Mercury, the closest planet to the Sun. You see, the radar signals come back showing ice exists on the planet, but how could ice exist on a planet so incredibly hot 다운로드?

NASA sent the spacecraft MESSENGER to orbit the planet and figure the mystery out (among other things). It turns out that ice exists at the planet north and south poles and possibly underneath some “dirt-shielding” 이웃사람 다운로드.

All of this was uncovered by Professor David Paige, who has previous experience with Mars and the Moon, as he explains in his own words:

 

“I was able to use the Mercury laser altimeter in conjunction with a three-dimensional ray-tracing thermal model that I built to study ice on the moon, Paige said 폴라리스 오피스 2019 다운로드. “Using these models, I calculated the average temperature on the surface of the planet and concluded that the surface temperatures were too warm to permit the long-term stability of ice 영어탈피 mp3 다운로드. The only possibility was some sort of thin layer of cover that allowed the ice to survive.”

This thin, dark layer is called a regolith and is probably made of organic substances like the Earth’s soil, rich in hydrocarbon compounds that may have come from the comets and meteorites that struck the planet over time jsp 서블릿 파일. The comets and meteorites may have also contributed the water that seeped under the soil cover to form the icy patches.

***

MESSENGER (Mercury Surface, Space Environment, Geochemistry and Ranging) is the first spacecraft to orbit Mercury 다운로드. Its goal is to collect better data about the composition and atmosphere of the planet, and it just completed its first year of information gathering.

***

While the mix of water and organic compounds on another planet may raise the possibility of extraterrestrial life for some scientists, this is not what excites Paige 명화 이미지. For him, the discovery of ice on Mercury is the triumph of science.

“We’re getting a good agreement between models and observations,” Paige said 다운로드. “What we thought was true is true. The most exciting part of this? We may not know lot of things, but on Mercury we have things under control.”

via UCLA Today

Continue reading MESSENGER sends first data back to Earth – uncovers ice on Mercury

The stars as viewed from the International Space Station

Multitudinous stars but what is really awesome are the shots or Earth. The atmosphere glows faintly while the surface is lined with an array of lights, lightning storms, and mountains 다운로드.

Makes me feel like we are an advanced civilization, even a planet in a Star Wars movie (that’s Coruscant for you geeks).

Timelapse videos depicting the stars from low earth orbit, as viewed from the International Space Station 다운로드. Images edited using Adobe Lightroom with some cropping to make the stars the focal point of each shot, and with manipulation of the contrast to bring out the stars a bit more 트래픽 프로그램 다운로드.

The video plays best if you let it load a bit first.

Via interesting, video at Vimeo

NASA's latest Mars probe, Curiosity, a nuclear robot with science fiction abilities

Tomorrow morning NASA will launch a Mars Probe, MSL Curiosity, into space for an eight month space journey and then a one year trek across the surface of the planet optima 글꼴.

A brief description of the probe:

A new robotic mission to Mars, carrying 10 highly sophisticated instruments to seek the basic chemicals of life in the planet’s ancient rocks, is standing on the launchpad at Cape Canaveral, ready to lift off Saturday morning aboard an Atlas V rocket on a 350 million-mile journey 오라클 10g 다운로드.

The six-wheeled rover named Curiosity is headed for the flanks of a Martian mountain that exists inside a crater where layers of sedimentary rock may hold evidence of what the planet was like a billion or more years ago: warmer, probably; wetter, most probably; and an abode for living organisms – just maybe 유니티 웹 다운로드.

Curiosity’s tools will drill into the mountain’s layered rocks and zap them with a laser so spectrometers can analyze the powdery particles to determine their composition 다운로드.

Via SFGate

There’s more to the story than lasers and spectral analysis, including a return to nuclear powered robots, this one has a core of plutonium 다운로드. Not to mention that Curiosity looks like Johnny Five’s bigger, geekier older brother, but that’s not what fascinates me.

It’s the science fiction that does 다운로드. Two key elements of this mission remind me directly of Star Wars. The first is the Sky Crane that uses rocket thrusters to lower the robot to the surface of Mars g2b.

Continue reading NASA's latest Mars probe, Curiosity, a nuclear robot with science fiction abilities

NASA’s latest Mars probe, Curiosity, a nuclear robot with science fiction abilities

Tomorrow morning NASA will launch a Mars Probe, MSL Curiosity, into space for an eight month space journey and then a one year trek across the surface of the planet 다운로드.

A brief description of the probe:

A new robotic mission to Mars, carrying 10 highly sophisticated instruments to seek the basic chemicals of life in the planet’s ancient rocks, is standing on the launchpad at Cape Canaveral, ready to lift off Saturday morning aboard an Atlas V rocket on a 350 million-mile journey 다운로드.

The six-wheeled rover named Curiosity is headed for the flanks of a Martian mountain that exists inside a crater where layers of sedimentary rock may hold evidence of what the planet was like a billion or more years ago: warmer, probably; wetter, most probably; and an abode for living organisms – just maybe 서커스 다운로드.

Curiosity’s tools will drill into the mountain’s layered rocks and zap them with a laser so spectrometers can analyze the powdery particles to determine their composition 다운로드.

Via SFGate

There’s more to the story than lasers and spectral analysis, including a return to nuclear powered robots, this one has a core of plutonium 다운로드. Not to mention that Curiosity looks like Johnny Five’s bigger, geekier older brother, but that’s not what fascinates me.

It’s the science fiction that does 다운로드. Two key elements of this mission remind me directly of Star Wars. The first is the Sky Crane that uses rocket thrusters to lower the robot to the surface of Mars 다운로드.

Continue reading NASA’s latest Mars probe, Curiosity, a nuclear robot with science fiction abilities