Exploring the Science Behind
Australia's Hot-Pink Lake
Have you ever seen a pink lake? There is a lake at a park in Melbourne, Australia that turns hot-pink every year. It turns pink because the lake contains salt-loving, single-celled germs that make pigments called carotenoids.
Carotenoids are a class of plant chemicals found in the cells of a large variety of plants, algae, and bacteria. Carotenoids are responsible for the bright red, yellow, and orange shades of many fruits and vegetables. For example, carotenoids are found in oranges, bell peppers, tomatoes, spinach, mangoes, watermelons, yams, and—of course—carrots. These pigments play a very important role for plant health; specifically, carotenoids help plants absorb light energy to use in photosynthesis. [Read More]