A possible cause of the end-Permian mass extinction: Lemon juice?
MIT researchers find that rain as acidic as lemon juice may have contributed to massive die-offs on land 252 million years ago.
Making Martian clouds on Earth
Cloud-chamber experiments show that clouds on Mars form in much more humid conditions than clouds on Earth.
El Niño cycle has a big effect on a major greenhouse gas
Nitrous oxide emissions decrease during El Niño, increase during La Niña.
New method could help communities plan for climate risk
MIT researchers develop tool to assess regional risks of climate change, potential impacts on local infrastructure and planning.
When it rains, it pours
Study estimates rate of intensification of extreme tropical rainfall with global warming.