A review of the five main methods proposed for cooling down the poles or slowing the loss of ice concludes they are all wildly impractical, wouldn't work, or both

1h 56m | PG

Fossil fuels accounted for less than 50% of the U.S. power mix for the first month on record in March, according to energy think tank Ember on Friday, driven by a near-quarter rise in wind and solar power generation.

Dr. Rasha Alawieh, a kidney transplant specialist and Brown University professor who had a valid visa, was expelled in apparent defiance of a court order.