Washington DC experiences hazardous air quality from Fourth of July fireworks while the US faces multiple climate crises including record heatwaves, water scarcity in western reservoirs, and threats to renewable energy jobs.

Washington DC recorded world's worst air quality for a city after 850,000 Fourth of July fireworks, with particulate matter concentrations rising to 6.7 times pre-fireworks levels, forcing residents to breathe unhealthy air for hours.

Lake Powell, the US's second-largest reservoir, is plunging toward unprecedented low levels as the western water crisis deepens amid climate warming and drying conditions, with experts warning the critical system is careening toward a breaking point.

At least 25 people have died across the US during a record heatwave with more than 20 states experiencing temperatures above 100°F as a heat dome sits over the eastern US during the holiday weekend.

Air pollution may cause childhood obesity by disrupting impulse control in babies, according to new research showing exposure to common neurotoxins leads to difficulty controlling impulses later in life.

Unionized renewable energy workers are decrying Trump's war on wind energy, calling his opposition a personal vendetta that threatens thousands of jobs in the growing clean energy sector.

Trump's proposed cuts to national parks funding threaten underfunded sites like Yosemite, already overwhelmed with overcrowding during summer, raising concerns about the sustainability of America's 'best idea'.

The US electric vehicle industry faces vulnerability to global competition from cheap Chinese cars as rising auto costs and shifting political ideology threaten to derail the golden age of EV adoption.

A study in Uganda found catnip lotion to be just as effective as Deet at repelling mosquitoes, offering a cheaper and homegrown alternative to the artificial chemical used globally for disease prevention.

Deep-sea creatures are experiencing unexpected benefits from melting Arctic ice as icebergs' castoffs provide rare nourishment, representing one of few positive ecological effects amid warming planet concerns.

Research universities are shrinking doctoral programs due to uncertain federal funding, signaling a troubling trend for the future of scientific research and workforce development in the nation.