Mexico City ban on single-use plastics takes effect

A broad ban on single-use containers, forks, straws and other ubiquitous items takes effect in Mexico's capital, one of the world's largest cities, after more than a year of preparation.

How the coronavirus interacts with cells

Scientists from Würzburg and the US have charted the first global atlas of direct interactions between SARS-CoV-2 RNA and human host cells. This may provide a starting point for novel treatments.

Anti-gravity: How a boat can float upside down

Here on Earth, everything is subject to gravity—it makes objects fall to the ground and rivers flow from higher ground to the sea. We know what would happen without it, thanks to images of astronauts floating around their ...

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