By Nina Chestney LONDON (Reuters) - High levels of carbon dioxide emissions in the atmosphere mean the next ice age is unlikely to begin for at least 1,500 years, an article in the journal Nature Geoscience said on Monday. [More]
Read More » Home / Tag Archives: 500-years
Tag Archives: 500-years
Feed SubscriptionUncovering Da Vinci’s rule of the trees
As trees shed their foliage this fall, they reveal a mysterious, nearly universal growth pattern first observed by Leonardo da Vinci 500 years ago: a simple yet startling relationship that always holds between the size of a tree's trunk and sizes of its branches.
Read More »People Were Chipping Stone Tools in Texas More Than 15,000 Years Ago
Some 15,500 years ago early nomadic North Americans had already set up camp near Buttermilk Creek in central Texas's hill country, where they left behind impressive array of stone tools and artifacts. [More]
Read More »