At 5.6 million square miles, 2016 had the lowest winter sea ice maximum in the 37-year satellite record. It's slightly lower than the previous record, set last year.
Solar eruptions from our sun are nothing compared to eruptions from some other stars - so-called 'superflares'. Two scientists say our sun could also be a superflare star.
About 100 million years ago, a baby chameleon crawled into some sticky resin. Over time, the resin fossilized into amber, leaving the lizard remarkably preserved.
With fat deposits that almost double their weight, the tiny ruby-throated hummingbird can fly non-stop for more than 1,200 miles (2,000 km) during migration.
Scientists found the creature in the deep sea, in the Hawaiian Archipelago. They nicknamed it Casper because of its ghostly appearance, caused by a lack of pigment.