Almost three-quarters of the world's coral reefs are thought to be deteriorating as a consequence of environmental stress. Until now, it has been possible to evaluate reef health only by field ...

He has little interest with identifying birds while I love the challenge of figuring out different species. Meanwhile, he is usually the first one to notice big raptors before I do, even if he can ...

55.5 x 49 in. (141 x 124.5 cm.) Subscribe now to view details for this work, and gain access to over 18 million auction results. Purchase One-Day Pass ...