A water plant called the sacred lotus regulates its temperature in order to benefit insects that it needs to reproduce. When the plant flowers, it heats its blossoms to above 86℉ for as long as four days. It does so, even when the air is as cool as 50℉. The heat releases an aroma that attracts certain insects, which fly into the flower to feed on nectar and pollen. But according to Roger Seymour and Paul Schultze-Motel of Australia’s University of Adelaide, the heat does more: It rewards insects with a stable environment that enhances their ability to eat, mate, and prepare for flight.