Plastic teabags release microscopic particles into tea

Many people are trying to reduce their plastic use, but some tea manufacturers are moving in the opposite direction: replacing traditional paper teabags with plastic ones. Now, researchers reporting in ACS' Environmental ...

Nanoparticles could someday give humans built-in night vision

Movies featuring heroes with superpowers, such as flight, X-ray vision or extraordinary strength, are all the rage. But while these popular characters are mere flights of fancy, scientists have used nanoparticles to confer ...

What the climate crisis means for land rights

The climate crisis will reshape our relationships to land around the world. Journalist David Wallace-Wells warns that, once the planet warms 2°C above preindustrial levels—the target set by the Paris Agreement—"major ...

World warned: change now or endanger food and climate

Humanity faces increasingly painful trade-offs between food security and rising temperatures within decades unless emissions are curbed and unsustainable farming and deforestation halted, a landmark climate assessment said ...

Parasitic bat flies offer window into lives of hosts

A new study on a Bahamian bat makes the case for using the species' unusual parasites to reveal details about the species' populations on the archipelago. Using parasites to glean information about their hosts isn't a new ...

3-D printed custom silicon heart valves

Scientists at ETH Zurich and the South African company Strait Access Technologies are using 3-D printing to produce custom-made artificial heart valves from silicone. This could help meet an aging population's growing demand ...

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