World Explained · Ocean science
Why an octopus has blue blood and three hearts
An octopus has three hearts and copper-based hemocyanin that turns blue when carrying oxygen. Both belong to one demanding circulation system.
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Featured · Archaeology
The 2,000-year-old computer recovered from a shipwreck
A corroded set of bronze fragments from an ancient shipwreck turned out to be a sophisticated hand-powered model of astronomical cycles.
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World Explained · Space
Why sunsets on Mars can glow blue around the Sun
Mars usually has a reddish sky, yet fine airborne dust can concentrate blue light close to the Sun at sunrise and sunset.
World Explained · Relationships
How to become more likeable without playing games
No technique can make another person like you. Research supports a more honest aim: become attentive, curious and easy to feel understood around.
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Global history, approachable science and enduring mysteries made clear without losing the wonder.
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