The air in US national parks contains just as much ozone pollution as the air in many of the country’s largest cities, according to a study published on 18 July in Science Advances.

The spring morning temperature in landlocked northern California warns of an incipient scorcher, but the small herd of piebald dairy cows that live here are too curious to care. Upon the approach of an unfamiliar human, they canter out of their barn into the already punishing sun, nosing each other aside to angle their heads over the fence. Some are black-and-white, others brown; all sport a pair of numbered yellow ear tags. Some are more assertive than others. One manages to stretch her long neck out far enough to lick the entire length of my forearm.

Climate change poses a serious threat to the United States’ internet infrastructure, with more than 4,000 miles of fiber optic cable expected to be under water within 15 years from just 1 foot of sea level rise, according to a new analysis by scientists at the University of Oregon and University of Wisconsin-Madison.

Along the Houston Ship Channel, a 52-mile waterway that spills into the Gulf of Mexico, giant vessels cruise beneath the blazing summer sun. Rusty tankers fill their holds with Texas specialties: refined oil products, petrochemicals, and plastic resins. Container ships arrive carrying corrugated boxes of imported T-shirts, electronics, and metals.

As global temperatures rise due to climate change, the number of air conditioning units in use globally is expected to quadruple by mid-century, increasing from 3.6 billion today to 14 billion in 2050, according to a new report by scientists at the University of Birmingham in the United Kingdom. As a result, the world will consume five times more energy for cooling than it does today.

Study is the first to examine social disparities in location of emissions

California law requires 25 percent of the revenue from the state’s cap-and-trade program, designed to limit emissions of greenhouses gases like carbon dioxide, to be invested in measures that benefit disadvantaged communities. But a newly published study by San Francisco State University, the University of California, Berkeley and others comparing emissions before and after the program began in 2013 found that disadvantaged communities are not yet benefitting — and have actually seen an increase in pollutants.

Persistent organic pollutants—or POPs—skulk around the environment threatening human health through direct contact, inhalation, and most commonly, eating contaminated food. As people are becoming more aware of their food’s origin, new research at the University of Pittsburgh suggests it might be just as important to pay attention to the origin of your food’s food.

A team of scientists has captured on video a four-mile iceberg breaking away from a glacier in eastern Greenland, an event that points to one of the forces behind global sea-level rise.

Future global warming may eventually be twice as warm as projected by climate models under business-as-usual scenarios and even if the world meets the 2°C target sea levels may rise six metres or more, according to an international team of researchers from 17 countries.

Failure to meet the United Nations’ 2ºC warming limits will lead to sea level rise and dire global economic consequences, new research has warned.