The advance brings up some ethical questions.
The Japanese government announced plans to dump more than 1 million tons of treated wastewater from the Fukushima nuclear power plant into the ocean, beginning in two years.
A third of Antarctica's vast offshore ice shelves would risk collapse into the ocean if the world warms by 4 degrees Celsius (7.2 degrees Fahrenheit) above pre-industrial levels.
An alphabetic inscription written on a jar fragment found at the site of Tel Lachish in Israel and dating back around 3,450 years may provide a "missing link" in the history of the alphabet.
Four dead gray whales have washed up in San Francisco Bay in eight days, prompting fears that the species is under threat in the area.
The 4-lb. (1.8 kilograms) chopper captured its first color photograph on Saturday (April 3), shortly after being lowered to the Martian dirt by the Perseverance rover.