Curiosity has detected a surprising variety of organic molecules on Mars, including compounds tied to the chemistry of life.

Of all the possible ways for the universe to end, the one that is the most concerning is known as False Vacuum Decay. While ...

Measuring the strength of gravity is extraordinarily difficult, and different experiments have always disagreed – but a new ...

Once in a blue moon, an animal cloning story appears in the headlines before disappearing back into the ether. Cloning is one ...

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The killing of George Floyd on May 25, 2020, was a seismic event, a turning point that compelled many Americans to do something and do it with urgency. Many educators responded by holding mandatory ...

IN A darkened auditorium in September 2008, I sat in the audience awaiting the start of a presentation entitled “The psychology of evil” by social psychologist Philip Zimbardo. Suddenly, the doors at ...

In 1971, Stanford University psychologist Philip Zimbardo conducted a notorious experiment in which he randomly divided college students into two groups, guards and prisoners, and set them loose in a ...

This article is an extended version of the article “The double-slit experiment” that appeared in the September 2002 issue of Physics World (p15). It has been further extended to include three letters ...