Weeds grow at London's Chelsea Flower Show

Nettles, dandelions, brambles: weeds—once considered a scourge—are taking pride of place at London's Chelsea Flower Show as gardeners concern themselves more than ever with biodiversity and sustainable development.

How the ancient messengers cAMP and cGMP deliver their messages

Two highly similar molecules with essential but often contrasting signaling roles in most life forms exert their distinct effects through subtle differences in their bindings to their signaling partners, according to a new ...

Metal-poor stars are more life-friendly, suggests study

Stars that contain comparatively large amounts of heavy elements provide less favorable conditions for the emergence of complex life than metal-poor stars, as scientists from the Max Planck Institutes for Solar System Research ...

Without this, plants cannot respond to temperature

UC Riverside scientists have significantly advanced the race to control plant responses to temperature on a rapidly warming planet. Key to this breakthrough is miRNA, a molecule nearly 200,000 times smaller than the width ...

Single gene causes stinging cell to lose its sting

When scientists disabled a single regulatory gene in a species of sea anemone, a stinging cell that shoots a venomous miniature harpoon for hunting and self-defense shifted to shoot a sticky thread that entangles prey instead, ...

Does failing to detect aliens mean we'll never be contacted?

In a recent paper submitted to The Astronomical Journal in November 2022, a scientist at the Swiss Federal Institute of Technology Lausanne quantifies how the Earth has not heard a radio signal from an extraterrestrial technological ...

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