I am not sure that I should be, but I am very excited by
recent work on restoring coral reefs.
The science is simple, very small fragments of coral with just a few polyps grow quickly. So it is possible to quickly produce a large number of small but not tiny colonies in acquarium and then put them on dead reefs. The living polyps spread over the dead coral and, maybe, the reef can be restored.
The reason I am excited is partly that a huge amount of carbon is sequestered in coral reefs. With global warming, coral may have to move away from the equator. Coral is beautiful but stuck in the ground. Now acidification might kill coral (etc etc etc) everywhere and then we are cooked. But I like it.
This is in addition to my longstanding enthusiasm for
restoring oysters to
Chesapeake Bay.