
On Earth Day and every day, the Earth Institute works to understand and protect our planet.

It also compares the effectiveness of medical-grade masks with homemade ones, and tests the feasibility of improving masks with homemade nose clips.

Rapid development in flood-prone zones during recent decades helped boost the amount of property exposed to the 2018 hurricane substantially, a new study says.

Apartment-level electricity use has increased under New York’s stay-at-home order. It could make matters worse for households already struggling economically.

A journalist looks back on his efforts to cover the first Earth Day.

And what we can learn from its success.

Scenes from an Upper West Side neighborhood in the grip of the pandemic.

COVID-19 is exacerbating some of education’s long-neglected social issues and inequalities.