The Conversation
The Conversation is an independent, nonprofit publisher of commentary and analysis, authored by academics and edited by journalists for the general public. On a mission “to promote truthful information and strengthen…

The Conversation
The Conversation is an independent, nonprofit publisher of commentary and analysis, authored by academics and edited by journalists for the general public. On a mission “to promote truthful information and strengthen…

Choosing your pace based on the physiological transition from easy to hard is more effective than calculations based on maximum heart rate, research shows.
Photograph by Marcus Smith/August; Illustration by Drue Wagner
Published January 5, 2026…

Moss is ancient. It evolved some 470 million years ago, long before the first dinosaur hatched. It is so rudimentary that it lacks both flowers and roots, yet it is an expert at survival. Now, that

Astronomers have seen asteroids colliding around a distant star for the first time.
These catastrophic collisions round the nearby star system were seen by the Hubble Space Telescope.
The star in question is Fomalhaut, and Hubble was able to give…

The start of the new year’s celestial show has begun, as the…

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Nearly all stars are found inside or around galaxies, but there are ways for stars to escape into intergalactic space.