Take nothing but pictures. Leave nothing but footprints. Kill nothing but time.
- Motto of the Baltimore Grotto
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Isn't that beautiful? It's an ancient footprint in some lumpy rocks in Kenya…but it is 1½ million years old. It comes from the Koobi Fora formation, familiar to anyone who follows human evolution, and is probably from Homo ergaster. There aren't a lot of them; one series of three hominin trails…
A comparison of three-dimensional scans of hominin footprints. Top) A footprint made by an experimental subject using a normal, "extended" gait. Middle) A footprint made by an experimental subject using a "bent-knee, bent-hip" gait. Bottom) A Laetoli footprints. From Raichlen et al., 2010.…
"We have found a strange footprint on the shores of the unknown." -Arthur Eddington
Since the dawn of mankind, we've left innumerable footsteps across the lands, as we've traveled far and wide across the globe.
Image credit: Greg Prohl.
But (with very rare exceptions) these footsteps don't last.…
tags: Orchard Oriole, Icterus spurius, birds, mystery bird, bird ID quiz
[Mystery bird] Orchard Oriole, Icterus spurius, photographed at Sabine Woods and Sabine Pass area, Texas. [I will identify this bird for you tomorrow]
Image: Joseph Kennedy, 28 April 2008 [larger view].
Nikon D200, Kowa 883…