From 9-foot tall ostriches to albatrosses with gargantuan wingspans, here are some of the biggest birds in the world.

The thick, mineral-rich layers of clay found on Mars suggest that the Red Planet harbored potentially life-hosting ...

Understanding how wildfires influence our planet's climate is a daunting challenge. Although fire occurs nearly everywhere on ...

What if Venus became Earth's moon? Explore how our planet would change if Earth’s twin, a planet almost the same size and gravity,suddenly started orbiting us. Venus is no ordinary planet. With ...

Scientists found a rhythmic mantle plume beneath Ethiopia is slowly tearing Africa apart - hinting at the birth of a new ...

Even if Earth does survive, it won’t be pretty. The temperature of our planet will be about 1,300 degrees C, hot enough to ...

Most meteorites that have reached Earth come from the asteroid belt between Mars and Jupiter. But we have 1,000 or so ...

For the service's 20th anniversary, Google was inspired by a social media trend from last year in which people shared ...

Geologists have long debated whether a stony formation in Canada contains the world’s oldest rocks – new measurements make a ...

Our planet has been asteroid-smashed, melted and eroded, enough that most of its original armor has been long buried. Except ...

A salty surge in the Southern Ocean is melting Antarctic sea ice from below — and causing dramatic changes scientists didn’t ...

Scientists have discovered that teeth retain permanent markers of smoking, offering new insights for forensics and ...