Projects must involve an expense, such as an after-school program or mental health initiative and should be able to be completed within a year. They must also
On this program we’re joined by Daniel Latorre, founder and director of The Wise City. Daniel is an advocate for digital placemaking with a focus on community engagement and for city leaders going beyond “smart” cities.
On this program we’re joined by Daniel Latorre, founder and director of The Wise City. Daniel is an advocate for digital placemaking with a focus on community engagement and for city leaders going beyond “smart” cities.
How many Tyrannosaurus rexes roamed North America during the Cretaceous period?
That s a question Charles Marshall pestered his paleontologist colleagues with for years until he finally teamed up with his students to find an answer.
What the team found, published this month in the journal Science, is that about 20,000 adult T. rexes probably lived at any one time, give or take a factor of 10, which is in the ballpark of what most of his colleagues guessed.
What few paleontologists had fully grasped, he said, including himself, is that this means that some 2.5 billion lived and died over the approximately 2 1/2 million years the dinosaur walked the earth.
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2.5 Billion Tyrannosaurus Rexes Roamed North America over a Period of 2.5 Million Years Over approximately 2.5 million years, North America likely hosted 2.5 billion Tyrannosaurus rexes, a minuscule proportion of which have been dug up and studied by paleontologists, according to a UC Berkeley study.
Image by Julius Csotonyi, courtesy of Science magazine
How many Tyrannosaurus rexes roamed North America during the Cretaceous period?
That’s a question Charles Marshall pestered his paleontologist colleagues with for years until he finally teamed up with his students to find an answer.
What the team found, to be published this week in the journal Science, is that about 20,000 adult T. rexes probably lived at any one time, give or take a factor of 10, which is in the ballpark of what most of his colleagues guessed.