Climate and environmental crises accelerate across the US while policy rollbacks threaten conservation efforts, from fish die-offs to ocean monitoring cuts and AI datacenter expansion in drought zones.

Arizona's San Carlos Lake has closed indefinitely after a major fish kill caused by drought conditions and water releases from a dam, highlighting the severe impact of prolonged drought on regional ecosystems and wildlife.

A Guardian analysis reveals that the majority of new US AI datacenters are planned for some of the driest regions in the country, raising concerns about water consumption for powering artificial intelligence infrastructure during a period of record drought.

The Trump administration is attempting to dismantle the bipartisan Roadless Rule that protects millions of acres of national forest from road construction, potentially making public lands significantly more vulnerable to development and degradation.

Scientists warn that plans to eliminate the US ocean monitoring system would 'severely degrade' the accuracy of weather predictions and leave the world 'flying blind' to oceanic conditions critical for climate forecasting.

The UN warns that ocean stress is accelerating with sea level rise rates doubling over the past decade, driven by pollution, industrial fishing, and the climate crisis requiring urgent global action.

Wildfire smoke has reversed years of US progress on ozone air quality improvements since 2015, with fires undoing regulatory gains and creating a growing public health crisis across North America.

Trump announced $700 million in funding for two new coal plants in Alaska and West Virginia using wartime Defense Production Act powers, signaling a major fossil fuel expansion despite climate concerns.

Mule deer have already begun using an incomplete $20 million wildlife bridge in California within days of its partial completion, demonstrating early success in wildlife crossing infrastructure.

Urban light pollution is worsening allergies by prompting plants to shed pollen longer and in greater quantities, according to new research highlighting an overlooked environmental health connection.

The New World screwworm, a destructive parasitic pest, has made an unwelcome return to the United States, raising concerns among farmers and scientists about agricultural and ecosystem impacts.