Water expands when it freezes, unlike most other substances. elaborate
Carbon is the only element that can form such a wide variety of complex molecules, due to its ability to form four strong covalent bonds. elaborate
Deforestation contributes more to climate change than all the world's cars, trains, ships, and airplanes *combined*. elaborate
Some proposed geoengineering techniques, like stratospheric aerosol injection, could potentially affect the ozone layer. elaborate
Toxicity isn't always immediately apparent; some substances have delayed effects, meaning symptoms might not show up for hours, days, or even years after exposure. elaborate
The observable universe is only a tiny fraction of the entire universe, which may be infinitely large. elaborate
Microplastics have been found in the deepest parts of the ocean, including the Mariana Trench. elaborate