During the Cold War, the US poured support into Arctic military outposts and climate research amid fears of a Russian invasion. Climate change is still on the military’s radar as a threat multiplier.

With the Trump administration prioritizing fossil fuels, cities and states will have to lead the way on clean energy.

A survey of solar farms in southern England revealed surprisingly rich habitat for birds.

Refugees have launched shops, mobile phone charging stations – even cinemas.

Discovering new materials could drive forward areas such as green technology and advanced electronics.

Offshore wind power brings more than local, clean energy. It provides jobs, encourages innovation and boosts economic growth as supply chains develop.

Environmental assessment methods involve trade-offs. Lean towards efficiency and risk missing crucial impacts. Wade too deep into fact finding and assessments become unfeasible.

AI is disturbing the push to electrify vehicles, heating and other sectors running on fossil fuels.

The Energy Department has a dual mission with a heavy science focus and manages large, expensive programs, many of which are behind schedule and over budget.

Even once researchers can reliably get more power out of a fusion reaction than they put in, they’ll still need to overcome engineering challenges to scale up fusion energy.