A second amber specimen that preserved scales and soft tissue showed features similar to that of a lizard, but the scientists said it was unlike any lizard alive today.

About 19 million years ago, roughly 90% of the world's open-ocean sharks died off, new research has found.

A powerful and much-needed upgrade to the International Space Station, which has been orbiting the Earth for more than two decades now, went awry this week.

The three-man crew docked with Tianhe, the core module of China's fledgling space station, launched in May.

It's China's first crewed mission in nearly five years and will last for three months, making it the longest for the country's ambitious space program.

The space station should be completed in 2022.

Climate changed

I visited Lake Mead, a huge reservoir on the Nevada-Arizona border, as a teen on a family RV trip in the mid-1990s.

Not too long after, in 2000, was the last time Lake Mead was considered full.

It's now at its lowest level since it was filled in the 1930s.

Experts blame climate change-fueled drought and increasing demand for water among the 25 million people who rely on Lake Mead for water.