The melting of the Thwaites glacier in Antarctica is heading for a tipping point, after which it will slide into the ocean and raise sea level by around half a meter (20 inches) over the next 150 years.

Facebook stands ready to promote right-wing extremism in 2020 just as it did before. "The more extreme the message, the farther it will travel."

The article proposes a law to require political ads to target the whole constituency that is voting. It sounds like a good idea. However, Facebook is nasty in many other ways, so show your friends that Facebook is not where you can be found.

The US government rejects and deports immigrants based on "evidence" in a secret database that supposedly indicates people's gang affiliations.

Supposed gang affiliations have been based on unverified speculations in other circumstances. There is no reason to expect them to be better founded when used for deportation. And secrecy positively invites lies.

New York City wants to use "congestion pricing" as an excuse for total tracking of the movements of cars.

US citizens: call on Congress to give refugees respect rather than concentration camps.

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