Latest study supports the idea that the asteroid impact 66 million years ago was the main driver of dinosaur extinction, not intense volcanic activity as some have suggested.
The most extensive investigation to date finds global insect numbers drop 0.92 percent a year. However, the world's freshwater insects, like mayflies, are bucking the trend and seeing numbers rise.
Climate scientists found that 14 of 17 climate models produced between 1970 and 2007 were broadly correct in their predictions, when differences in emissions were accounted for.
Hagel explained that insufficient climate change data is "a real and present threat to our national security," citing the danger abnormal storms pose to the military.
"I believe in building a better future for our children, which requires offering them a planet that is still habitable in 25 years," Macron told Congress.
Hurricane prediction science is improving, but at a frustratingly slow pace.
"Staving off the worst impacts of climate change will be severely hindered under this next U.S. administration," the letter says.
A former NASA climate scientist says the "young people's burden" is spreading like cancer.
'Science, engineering, technology, health and environmental issues are affecting voters lives at least as much as the economic policy or foreign policy or faith and values candidates often talk about.'
The project would, for the first time, enable researchers to study what exactly goes on in the Arctic ocean during wintertime.
New research takes into account how atmospheric temperatures in Antarctica will cause more ice melt and sea level rise than ocean warming.
Groundbreaking innovations from the last year that will change our world—and hopefully save it.
Warming temperatures in the East Pacific could lead to record-setting weather changes.
Many of the biggest challenges in the modern world involve science, so doesn't it make sense to hear what the presidential candidates think…and know?
Don't believe everything you see in graph form.
Traditional ways of life are getting harder
The documentary "Merchants of Doubt" looks at folks who claimed cigarettes were safe and are now focused on climate change.