In California, a bill is in the works that would make mink shawls and authentic fur-trimmed coats a think of the past.

New York aims to create a “net-zero” carbon economy by 2050, one in which carbon emissions are completely offset with carbon removal.

Glyphosate, the active ingredient in the weed-killer Roundup, was found in 21 products, from breakfast cereal to granola bars.

Campus buildings and landscapes are increasingly being designed to prevent stormwater from overwhelming the city’s sewer system. Water conservation and lush rain gardens and green roofs are welcome side benefits.

In a Q&A, Rachel Kyte, U.N. special representative and CEO of Sustainable Energy for All, discusses how this energy sector has changed in the past decade and what happens when political will doesn’t match the science.

A study of the spotted lanternfly led by master’s student Benjamin Rohr may shed light on ways to control this emerging threat.

Penn experts weigh in on a United Nations report that found that 1 million plant and animal species are on the brink of extinction.

The genetic code of Lonesome George, the last of the Pinta Galapagos tortoises, could contain insight about what leads to longer lifespans.

A researcher claims to have edited the genes of a pair of twins, sending the scientific community into debate.

Insect populations have seen a sharp decline in male fertility, which may be the cause of population decreases