We need one more thing—how about Newton’s second law? This says the acceleration depends on the net force (Fnet) and the mass (m) of an object. It’s usually written as Fnet = m × a, but we can rearrange it like this: a = Fnet/m. Combining this with our gravitational force, we get something…
Although around 70% of the Earth’s surface is covered by…
Mankind is still a long way off from colonizing other…
The Cambrian explosion was one of the most dramatic chapters in the history of evolution.
Around 540 million years ago, a sudden, astonishing burst of diversification effectively marked the beginning of most animal life on our planet.
The fossil record rapidly became much richer, revealing
Steven Spielberg’s new film Disclosure Day imagines the moment 8 billion humans find out that we are not alone in the universe.
The movie, which opens in US theaters on June 12, is a fictional account of the government cover-up and subsequent “disclosure” of evidence that aliens have…
When you’re prospecting for gold, sometimes you can find treasure of a different kind.
That’s what happened in the desert of Western Australia, where geologists looking for deposits of the precious metal found something far rarer.
What started with a routine survey took a strange turn when…
The highest-resolution map yet of the underlying geology beneath Earth’s Southern Hemisphere revealed something we had never known before: an ancient ocean floor that may wrap around the core.
This thin yet dense layer lies at a depth of about 2,900 kilometers (1,800 miles) below the surface,…
An oceanic expedition has turned up 31 new species from a vast, dimly lit habitat between the sunlit surface and the deep ocean.
The international team of scientists aboard the Schmidt Ocean Institute’s Falkor (too) research vessel also achieved another seagoing milestone – imaging the…
