An occasional series where Mongabay founder Rhett Ayers Butler shares analysis, perspectives and story summaries. Human ...

videoAnimal life cycles This animated film shows the life cycle of a butterfly and a frog, and takes us through the human life cycle. The food chain. videoThe food chain This short film for KS1 ...

From here we move onto two examples of metamorphosis - a butterfly and a frog - and finally we see the life cycles of a bird and a human. This clip is from the series Natural world of plants and ...

Since the mid-1900s, humans have been exerting an ever-increasing impact on the global nitrogen cycle. Human activities ... critical to the survival of all life on Earth. Nitrification is the ...

Rivers, streams, lakes, and reservoirs aren't just scenic parts of our landscape—they're also vital engines for life on Earth ...

BC's Philip Landrigan, M.D., and the Minderoo-Monaco Commission on Plastics and Human Health present a sweeping new report showing plastic as a hazard at every stage of its life cycle Philip Landrigan ...

In population dynamics, there is an "echo effect". Today's aging population is the echo of a long period of low fertility ...

There is, furthermore, a persistent feeling that the life cycle concept adds luster and believability to the insistent claim in certain circles that marketing is close to being some sort of science.