New human ancestor found in Ethiopia

According to scientists who made the discovery, the find provides conclusive evidence that, millions of years ago, there was more than one human species.

6.7-magnitude earthquake in Alaska

The quake took place 3 a.m. EDT (0700 UTC) Friday morning in the earthquake-prone, sparsely populated Aleutian arc, some 400 miles (600 km) from Anchorage.

Video: Translating climate change to music

Imagine setting global warming to music. That's what a student at University of Minnesota has done, basing his composition on actual temperature data since 1880.

Hawaii governor says Thirty Meter Telescope has right to continue

$1.5-billion project halted last month, following demonstrations. Gov. David Ige said to continue, but that one-fourth of telescopes on Mauna Kea should be removed.

Heat wave kills 1,100 in India

A deadly heatwave has gripped India since April. The death toll has now risen to more than 1,100. Cooling monsoon rains are not expected for several more days.

9 instruments chosen for Europa mission

NASA’s 2016 budget request includes $30 million for a mission to Europa, Jupiter's moon, thought to have a liquid ocean beneath its icy crust.

Medusa Nebula foreshadows our sun’s fate

Here's the most detailed image yet of the Medusa Nebula. The image foreshadows the final fate of our sun, which will eventually become an object of this kind.

Most dramatic music video ever

Recorded live by the doom metal band Hamferð during the March 20, 2015 total eclipse of the sun above the village of Kvívík in the Faroe Islands.

An octopus senses light with its skin

New research shows an octopus can change skin color in response to light, without input from the eye or brain.

Most luminous galaxy in the universe

This galaxy is very distant. It shines with a luminosity of some 300 trillion suns. It's one of a new class of objects discovered via NASA's WISE mission.