Study identifies dinosaur 'missing link'

A bizarre dinosaur which looked like a raptor but was in fact a vegetarian may be the 'missing link' between plant-eating dinosaurs and theropods, the group that includes carnivores such as Tyrannosaurus rex and Velociraptor.

How friction evolves during an earthquake

By simulating earthquakes in a lab, engineers at Caltech have documented the evolution of friction during an earthquake—measuring what could once only be inferred, and shedding light on one of the biggest unknowns in earthquake ...

Climate change will cut crop yields: study

Climate change will have a negative effect on key crops such as wheat, rice, and maize, according to a major scientific report out Tuesday that reviewed 70 prior studies on global warming and agriculture.

The key to drought-tolerant crops may be in the leaves

A solution to help farmers to grow crops in dry areas or during stretches of drought may depend on breeding and cultivating plants that protect themselves with a thicker layer of leaf wax, a new study shows.

Sierra Leone appeals for urgent help after deadly floods

Sierra Leone's president appealed Tuesday for urgent help for the flood-hit capital of Freetown, where more than 300 people are feared dead, as rescue workers continued a grim search for bodies after one of the worst natural ...

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