Stories by Hannah Hoag

Rising temperatures are threatening urban areas, but efforts to cool them may not work as planned

Atmospheric conditions and human actions combined to drive the 1930s megadrought

The effects of climate change will slow air circulation around the world, a study finds

An evolutionary analysis shows that the two species diverged within the past 500,000 years

Two recent record hot spells have been traced to a feedback loop between dry soils and trapped air

A new analysis showed that the genes of the deadly 1918 pandemic are of avian origin, not from the mixing of human and swine viruses

Study reveals global shift toward animal-based diet—a bad omen for the environment

The Antarctic ozone hole's effects may have spread much wider than thought

A study of three million infants across nine nations, including the U.S., South Korea and Brazil, finds a connection between inhaled particulate matter and low birth weight in infants

Alberta's carbon offsets are supposed to be real, measurable and provable, but they may not be, a report says