Current thinking on how the Toxoplasma gondii parasite invades its host is incorrect, according to a study published today in Nature Methods describing a new technique to knock out genes. The findings could have implications ...
Definition. Coral bleaching is a process whereby the coral colonies lose their colour, either due to the loss of pigments by microscopic algae (zooxanthellae) living in symbiosis with their host organisms (polyps), or because these zooxanthellae have been expelled.
Corals Are Dying on the Great Barrier Reef. Australian government issues emergency response level and warns that bleaching may be linked to climate change. This panoramic image reveals coral bleaching at Lizard Island on the Great Barrier Reef in March 2016.