The ozone layer’s most famous wound opened over Antarctica, but the damage may have started much earlier, and somewhere else ...

Plastic fills our dumps, homes and oceans. Plastic pollution takes a huge toll on wildlife: More than 700 species, including sea turtles, fish and whales, eat plastic or get tangled up in it. Plastic ...

Since antiquity, humans have used pigments to add colour to their surroundings. Today the main one is titanium dioxide — a naturally occurring compound that is extremely white and bright in its ...

Water contaminants span a wide range of biological and chemical agents, which makes effective wastewater treatment essential ...