Physics
Science
Discoveries and research from space to the oceans, explained for curious readers.
Mathematics
The Algebra Mistakes That Cost Students the Most Marks
Most lost marks in algebra come from a handful of small, repeated slips, not from hard topics. Here are the most common ones, a quick check for each, and a study method backed by research.
How Scientists Know the Age of the Universe
Several independent lines of evidence point to a universe about 13.8 billion years old. Here is how the measurements work, what the James Webb telescope has added, and the puzzle still unsolved.
Earth & Climate
The Science Behind Weather Forecasts
A five-day forecast today is about as accurate as a one-day forecast was in 1980. Balloons, satellites, supercomputers and now artificial intelligence explain why.
Earth & Climate
Why Oceans Matter to the Climate
The oceans have absorbed more than 90 percent of the extra heat trapped by greenhouse gases and nearly a third of our carbon dioxide emissions. That has slowed warming on land, at a cost.
