Environment & Sustainability

Learn about climate change, renewable energy, and sustainable living practices. CurioAtlas brings together research and solutions shaping the future of our planet.

In search of the tiny toad that stopped a dam

Arvoreznha, Brazil — Meet the admirable red-belly toad — a tiny amphibian found nowhere else on Earth but a small forest patch in southern Brazil. Don’t let its size fool you. In 2014, it made history by halting the construction…

A fish a day: More than 300 freshwater species described in 2025

Taxonomists described 309 new species of freshwater fish in 2025, according to a report released by SHOAL, the IUCN Freshwater Fish Specialist Group (FFSG) and the California Academy of Sciences (CAS). With nearly one new description each day of the…