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Researchers demonstrated that brewing tea naturally adsorbs heavy metals like lead and cadmium, effectively filtering dangerous contaminants out of drinks. Researchers tested different types of tea, tea bags and brewing methods. Finely ground black tea leaves performed best at removing toxic heavy metals. Longer steeping times helped tea remove larger amounts of contaminants.

A comparison of 263 species supports the idea that large animals have higher rates of cancer than smaller ones. But the increase is less than expected, suggesting they have evolved ways to lower their risk

Preserved wooden spears from hundreds of thousands of years ago seem to have been suitable for throwing, not just close-range attacks

The site of a deep-sea mining test in 1979 had lower levels of biodiversity when researchers revisited it in 2023 compared with undisturbed areas nearby

From the perspective of complex systems, the study reveals the universality, specificity, and explanatory power of underlying rules governing urban system evolution.