Top 10 new species of 2016

From a giant tortoise to a tiny beetle and an early hominid, this year’s top 10 new species list contains some exciting finds.

Lake Mead reaches a record low

Lake Mead - largest U.S. reservoir, as measured by water capacity - has reached a record low. Space images from 2016 and 1984 show its highs and lows.

Deciphering mysterious honey bee decline

While the massive and sudden colony collapses that occurred a decade ago have abated, honey bees are still dying at troubling rates.

Solar storms key to life on Earth?

Energy from our young sun – 4 billion years ago - helped create molecules in Earth's atmosphere that allowed it to warm up enough to incubate life, says study.

Man-eating crocodiles captured in Florida

Monster Nile crocodiles might be Florida’s newest invasive species.

New clues about ancient asteroid strike

New evidence from Australia of an enormous asteroid that struck Earth 3.4 billion years ago, triggering earthquakes and tsunamis and causing cliffs to crumble.

Seagulls on an iceberg

A group of ivory gulls - a threatened species of seagull - has made a colony in an unusual place: On an iceberg.

Your top 4 questions about tornadoes

May is the peak month for twisters here in the U.S.

How Earth’s magnetic field is changing

Data from a trio of satellites show rapid local changes in Earth's magnetic field. The cause is likely accelerations in the flow of liquid iron near Earth's core.

Volcanic eruption in far south Atlantic

If it weren't for satellites, the eruption on Bristol island might have gone unnoticed. Instead, here are pics.