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Scientists think there are 300 million habitable planets in the Milky Way, and some may be home to intelligent life. Bruno Gilli/ESO

Blasting out Earth’s location with the hope of reaching aliens is a controversial idea – two teams of scientists are doing it anyway

This year, two groups of astronomers plan to send messages containing information about humans and the location of Earth toward parts of space they think may be home to intelligent life.
The sticky biofilms that form on microplastics can harbor disease-causing pathogens and help them spread. Tunatura/iStock via Getty Images Plus

Disease-causing parasites can hitch a ride on plastics and potentially spread through the sea, new research suggests

Normally land-bound pathogens that cause deadly diseases for both humans and animals can cling to microplastics and end up in your seafood.
Elon Musk’s moment of triumph is a moment of uncertainty for the future of one of the world’s leading social media platforms. AP Photo/John Raoux

Elon Musk’s plans for Twitter could make its misinformation problems worse

Twitter, more than other social media platforms, fosters real-time discussion about events as they unfold. That could change now that Musk has gained control of the company.
Twitter will soon be without the benefits – and problems – of a public board of directors. A-Digit/DigitalVision Vectors via Getty Images

Elon Musk won’t have a board to watch him when he takes Twitter private – does that matter?

Musk’s tweets badgering Twitter’s board raised important corporate governance questions about a board’s purpose and whether its members should own shares in the company they oversee.
Video calls often show people an image of themselves. SDI Productions/E+ via Getty Images

Staring at an image of yourself on Zoom has serious consequences for mental health – especially for women

Mirrors, selfies and knowing other people are looking at you all cause people to think of themselves as objects. Video calls are all three in one and are likely increasing the harms of self-objectification.
The depths of the valleys on a key act like a code that must match the lock. Robin Smith/The Image Bank via Getty Images

How do keys open locks?

A computer security expert explains how keys work – and how they are like passwords.