Several weeks during summer 2021 saw heat records in the western United States and Canada broken not just by increments, but by tens of degrees, an event of unprecedented extremity. To what degree was it climate change, bad luck, or a combination?

Moving from fossil fuels to solar panels, wind turbines and other renewable energy sources will by itself create a new stream of carbon emissions with the construction so much new infrastructure. The good news: Speeding the transition would greatly reduce this effect.

The data reveal that only a tiny fraction of buildings have green roofs, and most are in wealthy areas.

Most species are not receiving protection until their populations are precariously small, thus dimming their prospects of recovery.

In 1858, a sailing ship left Warren, R.I., to hunt the globe for whales, and never returned. Where did it end up? Researchers from the southern and northern hemispheres joined to investigate.

En 1858, un velero partió de una ciudad costera del noreste de Estados Unidos para cazar ballenas alrededor del mundo y nunca regresó. ¿Dónde terminó? Investigadores de los hemisferios sur y norte se unieron para dar respuesta a este misterio.

There is new evidence that ancient high latitudes, to which early dinosaurs were largely relegated, regularly froze over, and that the creatures adapted—an apparent key to their later dominance.

Using historical records and model data, researchers have for the first time shown that the annual number of tropical cyclones dropped during the 20th century compared with the late 19th century.

A handful of countries, including the United States, may emit half the world’s greenhouse gases by 2050.

In a collaboration that included Columbia researchers, Belmont County residents set up a low-cost sensor network that is helping them fight for clean air.