300 miles off the coast of Oregon lies an active volcano, with a magma reservoir two thirds the length of Manhattan, that the world has never seen before.

It’s all because of the similarities between words.

This floating device lets you dive without scuba gear.

Many of us are drawn to beauty in mathematics. But is that the way nature really works?

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Once, single-cell life claimed sole dominion over the earth. For some three billion years, unfathomable generations of unicellular organisms ate, grew and reproduced among only each other. They evolved into predators and prey, thrived and spread across the primordial waters and land, and formed complex and dynamic ecosystems in every ecological niche on the planet. Around 600 million years ago, some even crossed the threshold into multicellularity.

Today, however, single-cell organisms are synonymous with notions like primitive and simple. Yet, new research suggests that they may be capable of much more than their very distant human cousins might suspect.

In an effort to replicate an experiment conducted over a century ago, systems biologists at Harvard Medical School now present compelling evidence confirming at least one single-cell organism—the strikingly trumpet-shaped Stentor roeselii—exhibits a hierarchy of avoidance behaviors.

Scientists have found a new example of a recently discovered type of volcano called a “petit-spot.”

SAN FRANCISCO — Larry Page and Sergey Brin, the Stanford graduate students who founded Google over two decades ago, are stepping down from executive roles at Google’s parent company, Alphabet, they announced on Tuesday.

Sundar Pichai, Google’s chief executive, will become the chief of both Google and Alphabet.

The move is an end of an era for Google. Mr. Page and Mr. Brin have personified the company since its founding and have been two of the technology industry’s most influential figures, on a par with the founders of Apple and Microsoft, Steve Jobs and Bill Gates.

In 2011 seven Danish students were revived after they fell into ice-cold water, and ‘died’.