We have talked before about the huge decline in the population of monarch butterflies. The causes are a combination of factors including illegal logging in Mexico, droughts, wildfires, parasites, and most importantly, the drastic loss of crucial milkweed habitat in the US. Milkweed is the only food plant that monarch caterpillars can eat and modern herbicides like those used on genetically modified crops are wiping it out over large areas.
Wave power is produced by the use of electricity generators placed on the surface of the ocean. Energy output is determined by wave height, wave speed, wavelength, and water density. This technology is a fledgling state: there are only a handful of experimental wave generator plants in operation around the world.
Common throughout North America, little brown bats keep insect populations in check. Anyone who has spent dusk near a lake has seen the little browns performing acrobatics on the wing as they feast on mosquitoes, midges, and gnats. Each bat can eat thousands of bugs each night.