More than 91 percent of the world's population lives in areas that exceed air quality guidelines recommended by the World Health Organization, and more people are impacted by worsening air quality each year. 

Waste materials from the pulp and paper industry have long been seen as possible fillers for building products like cement, but for years these materials have ended up in the landfill.

Harmful algal blooms (HABs) occur in all 50 U.S. states and many produce toxins that cause illness or death in humans and commercially important species. 

A team of scientists, led by NTU Singapore and Sungkyunkwan University in South Korea, has created a reusable, biodegradable sponge that can readily soak up oil and other organic solvents from contaminated water sources.

Atmospheric methane has tripled since pre-industrial times. It traps heat far more effectively than carbon dioxide and accounts for 25% of atmospheric warming to date.

Runoff from Houston’s 2016 Tax Day flood and 2017’s Hurricane Harvey flood carried human waste onto coral reefs more than 100 miles offshore in the Flower Garden Banks National Marine Sanctuary, according to a Rice University study.

Ambient air pollution is a global public health crisis, causing more than 4.9 million premature deaths per year around the world. In Africa, it has surpassed AIDS as the leading cause of premature death.

There are many policies that could potentially curb carbon dioxide emissions and slow global warming.

Lakes are important in the Earth-atmosphere system. They can maintain ecological balance and regulate climate, as well as the nearby landscape.

Nine of the hottest years in human history have occurred in the past decade.