Who Kissed First? Archaeology Has an Answer.

What turned Earth into a giant snowball 700 million years ago? Scientists now have an answer: All-time low volcanic carbon emissions triggered a 57-million-year-long global ice age

What turned Earth into a giant snowball 700m years ago? Scientists now have an answer

Is there life on Mars? Congressional gridlock is getting in the way of an answer. NASA cut hundreds of jobs Tuesday at one of its key laboratories that sends robots to Mars, despite dozens of lawmakers urging the agency and the White House to avoid such a move.