Ecology & environment

Santa Cruz Island, 1980 (left) and 2008

Clear out invaders, and let nature take its course

UC undergrads find native vegetation rebounding on Santa Cruz Island decades after eradicating imported grazers.
scarlet macaws

Changes in farming practices can save evolutionary diversity

A new study by biologists at UC Berkeley and Stanford University highlights the dramatic hit on evolutionary diversity when forests are transformed into agricultural lands.
bollworm caterpillar

Evolutionary biology key to tackling diverse global problems

Drug-resistant diseases, pesticide-resistant bugs and animals threatened by climate change are signs of human-driven evolution getting out of control. A multi-university team calls for solutions.

The sun rises as one of UC's top energy choices

Largest solar power purchase by a university moves UC closer to its goal of achieving carbon neutrality by 2025.

Biologists try to dig endangered pupfish out of its hole

Considered the world's rarest fish, the wild pupfish faces a 28 to 32 percent risk of extinction over the next 20 years. A UC Berkeley biologist is helping to rescue it from that fate.

Study traces ecological collapse over 6,000 years of Egyptian history

Ancient Egyptian artworks help scientists reconstruct how animal communities changed as climate became drier and human populations grew.
Peter Homyak collects lake sediment core

Acidity on decline in Sierra Nevada lakes

Research team did long-term measurements of lake chemistry, studied sediment cores from the lakes.
Turceni Power Station, Romania

Existing power plants will spew 300 billion more tons of carbon dioxide during use

Study is the first to quantify how quickly these “committed” emissions are growing — by about 4 percent per year — as more fossil fuel-burning power plants are built.
Chelsea Arnold

Drying Sierra meadows could worsen California drought

Weather-related changes threaten key natural regulator of the region's water flow.

State of the lake: high (tech) and dry at Tahoe

Drought, climate change and other natural and human factors are driving changes at Lake Tahoe.