From Canada To The Caribbean: Tree Leaves Control Their Own Temperature
The temperature inside a healthy, photosynthesizing tree leaf is affected less by outside environmental temperature than originally believed. (...) Tree photosynthesis, according to the study, most likely occurs when leaf temperatures are about 21°C, with latitude or average ( Read more... )

I'm a long time lurker and thought it was time to make a post.

An excerpt from National Geographic:

Several ancient date seeds were taken from an excavation at Masada, a historic mountainside fortress, in 1973. In A.D. 73 Jewish Zealots took their own lives at the fortress rather than surrender to the Romans at the end of a two-year siege.

Carbon ( Read more... )

I can't imagine a better deterrent to trespassers and the like as having a big ol' manchineel (Hippomane mancinella) in my yard.

( Images ahoy! )