Nature & Wildlife
Natural lights in nature come in two familiar forms: bioluminescence and fluorescence. They differ primarily by their light source: bioluminescence is a chemical reaction within an organism that creates its own light, while fluorescence is a physical process where an organism or object absorbs external light and reemits it.
Nature & Wildlife
When we misuse or overuse artificial light at night, we create nighttime light pollution, which makes it harder to see the night sky and causes negative effects on wildlife and human health. For example, sea turtle hatchlings usually wait until night to emerge from their nests to reduce exposure to daytime predators.
Nature & Wildlife
Cards, chocolates, flowers or a dinner for two by candlelight. Most of us consider these things to be appropriate gifts for those who mean the most to us on Valentine’s Day, the day we set aside each year to celebrate our feelings of love.
