A super-Earth planet that dips in and out of its star's habitable zone has been discovered just 19.7 light-years away.

Earth,” dubbed HD 20794 d, boasts a mass six times that of our planet and resides within the star’s “habitable zone.” The ...

Thirty years after the discovery of the first exoplanet, astronomers have detected more than 7,000 of them in our galaxy. But there are still billions more to be discovered. At the same time, ...

The earliest-known dinosaur fossils date to roughly 230 million years ago, including Eoraptor and Herrerasaurus from ...

Scientists have discovered two mountains which reach heights of around 620 miles (1,000km), dwarfing anything else found on ...

In the U.S., the pyric transition sparked a wave of monster fires that rode the rails of settlement – fires an order of magnitude larger and more lethal than those of recent decades. Land clearing and ...

The megaflood that refilled the Mediterranean Sea 5 million years ago was so huge and fast that it shaped the landscape of ...

Carlos Garcia is one of the most respected immigrant rights leaders in the nation, particularly in Arizona, where he’s worked ...

An international team of environmentalists, zoologists and land use specialists has developed an extinction probability ...

Across the globe, no other human activity currently affects the survival of wildlife species more than where we choose to ...