“Photosynthesis, the activity that ultimately makes all life possible, permits plants to trap energy from the sun and store it in the… — Richard M. Ketchum Copy Share Image
“The announcement yesterday follows Obama’s 2011 agreement with automakers to build cars that average 54.5 miles per gallon by 2025. But as… — Anonymous Copy Share Image
It will be nearly impossible to slow warming appreciably without condemning much of the world to poverty unless energy sources that emit… — Henry Sylvester Jacoby Copy Share Image
President Bush insisted today that he was not caving in to big money contributors, big-time lobbyists, and overall industry pressure when he… — Dan Rather Copy Share Image
We have an atmosphere that is roughly 21% oxygen. The rest of it is largely nitrogen. There's just enough carbon dioxide (CO2)… — Sylvia Earle Copy Share Image
“Choosing expensive carbon-cutting policies or insisting on green development approaches might seem like an easy choice for the world’s elite in Washington,… — Bjorn Lomborg Copy Share Image
“These early, single-celled organisms unwittingly transformed Earth’s carbon dioxide-rich atmosphere into one with sufficient oxygen to allow aerobic organisms to emerge and… — Neil deGrasse Tyson Copy Share Image
“The world around us is a beautiful, supportive environment for human growth and flourishing. Isn't it amazing how everything we need to… — Carla Johnson Copy Share Image
The idea that carbon dioxide is a carcinogen that is harmful to our environment is almost comical. Every time we exhale, we… — John Boehner Copy Share Image
Carbon dioxide does not cause or contribute to smog, and the Kyoto treaty would do nothing to reduce or prevent smog. — Stephen Harper Copy Share Image
Burning fossil fuels emits carbon dioxide. And carbon dioxide is a greenhouse gas that traps heat in the atmosphere. There is no… — Christine Todd Whitman Copy Share Image
When I was a boy in the 1930s, the carbon dioxide level was still below 300 parts per million. This year, it… — David Attenborough Copy Share Image
We thought we knew 20 years ago. That led to some alarmist books – mine included – because it looked clear-cut, but… — James Lovelock Copy Share Image
My first inclination is to be a bit skeptical about the claims that human-produced carbon dioxide is the direct contributor to global… — Buzz Aldrin Copy Share Image
“During my time in high altitude astronomy, I routinely witnessed workers breathing medical oxygen, industrial carbon dioxide, nitrogen and helium gas as… — Steven Magee Copy Share Image
“A lot has changed since Copenhagen, however, which is why many big energy companies are paying close attention to the Paris talks.… — Anonymous Copy Share Image
“Since about 1850, twice as much atmospheric carbon dioxide has derived from farming practices as from the burning of fossil fuels (the… — Judith D. Schwartz Copy Share Image
“In addition, unconscious breathing is often quite ineffective, as are many other acts when they’re done without purpose or control. It’s estimated… — Cameron Stauth Copy Share Image
Bitumen is junk energy. A joule, or unit of energy, invested in extracting and processing bitumen returns only four to six joules… — Thomas Homer-Dixon Copy Share Image
“When the Earth was only about a third of its eventual size, it was probably already beginning to form an atmosphere, mostly… — Bill Bryson Copy Share Image
There is no significant man-made global warming at this time, there has been none in the past and there is no reason… — John Coleman Copy Share Image
“I try when it matters”. “Like when?” “Like when I’m about to die and stuff. Besides, I just had a super busy… — Benedict Fetsch Copy Share Image
...there is no substantive basis for predictions of sizeable global warming due to observed increases in minor greenhouse gases such as carbon… — Richard Lindzen Copy Share Image
There are several types of greenhouse gasses, but carbon dioxide is the most important. — Charles C. Mann Copy Share Image
There is a point of no return after which warming becomes unstoppable - and we are probably going to sail right through… — Gwynne Dyer Copy Share Image
