Air pollution in Delhi
Science & Health
The past seven days, the most important first
2025 in climate change
The World Meteorological Organization reports that global concentrations of carbon dioxide, methane, and nitrous oxide reached record highs in 2025, with carbon dioxide averaging 426.8 parts per million.
Health
The United States Food and Drug Administration approves the first generic version of lenacapavir, a twice-yearly HIV prevention injection expected to cost about US$40 annually in 120 low- and middle-income countries.
Science