Why are thousands of dolphins dying off the coast of Peru?

For the past three months, something has been very wrong along the Peruvian coast. Nearly 3,000 dolphins have washed ashore dead, making it one of the largest marine mammal die-offs ever recorded...and it likely isn't even close to over. » 4/08/12 2:00pm 4/08/12 2:00pm

A super-sized Sun could explain why Earth didn't freeze to death long…

Sun-like stars become brighter over the course of their long lives, which means that the Sun once provided Earth with far less heat than it does now - so much less, in fact, that life should have been impossible. » 2/13/12 12:14pm 2/13/12 12:14pm

The ancient Earth should have frozen to death billions of years ago

The geological evidence suggests that there have been liquid oceans on Earth dating back at least 3.5 billion years, a fact that was crucial to the emergence of the very first lifeforms. The only problem is that that's utterly impossible. » 6/05/11 9:00am 6/05/11 9:00am