Headlines

A new design for a plasma engine fuels on only thin air

Choosing an orbit for a satellite always comes with trade-offs. Very low Earth orbit (VLEO), between 100–450 km (62–280 miles), has distinct advantages. Remote-sensing cameras can take better pictures, communications and radar require less power, and atmospheric drag

Parakeets, male or female, love a good fight

In a study of monk parakeets, researchers at the University of Cincinnati and Duke University found that sex has little to no impact on who initiates fights, who is targeted or who rises in the dominance hierarchy.

AI models enable cross-species mapping of cell biology

Researchers at Stanford Medicine have developed two new artificial intelligence models of the biological cell. The first, called universal cell embedding, paved the way for a second-generation model called TranscriptFormer, which has been trained on data from 112 million cells

Forest fire smoke reduces bird diversity, study suggests

When forests burn, the direct consequences are obvious: houses go up in flames and habitats are destroyed. The damage caused by smoke extending far beyond the fire area is less visible. Sarah Meier, an environmental economist at ETH Zurich, investigated this in relation to

Researchers identify rubber-related chemicals in Swiss milk

Every year, tire and road wear release an estimated 6 million tons of rubber particles into the environment, some of which eventually reach agricultural land through the air, water runoff and fertilizers. Because dairy farms often operate near roads, rubber-related chemicals

Chocolate's new climate threat: Too much rain

Cocoa farmers in West Africa cannot stop intense downpours from damaging their crops. But they may be able to anticipate the risk and prepare, protecting both their livelihoods and their plants, the source of one of the world's most beloved foods.