The addition of a stone tip to a wooden spear at least half a million years ago was a pretty big deal FYI blogs.scientificamerican.com/observations/2…

Thing I didn't know existed until today: ballistics gelatin. Also useful for measuring lethality of stone age weapons blogs.scientificamerican.com/observations/2…

Innovations in early hunting tools shed light on how sophisticated human thinking was Arizona State University #IHO bit.ly/1q8N4FX

Study examines chimp lethal aggression and #IHO's Joan Silk weighs in bit.ly/1s6SrZd

#IHO Arizona State University receives largest single award for human origins research bit.ly/1ARyDYF

Finishing work and headed to the Big Apple for the big 40 #Lucy40.

Grabbing some sun by the pool--NYC is supposed to be cold this week. #Lucy40

Waiting for plane to board to NYC!

Explorers Club event for #Lucy40. Don Johanson discoverer of Lucy-we are all African Inst of HumanOrigins

#Lucy40 Don Johanson at the podium at the Explorers Club Inst of HumanOrigins

40 years since the discovery of Lucy!? Dr. Donald Johanson speaks Feb 12 in Tempe AZ for #Lucy40 More info at iho.asu.edu/news-events/lu…

Thank you Neil Shubin for the support! reminded me to set up a group viewing of #YourInnerFish later this semester. #IHO Arizona State University

#ASUDayatAZCapitol Arizona State University Chatting with AZ legislators--#ResearchMatters

Lucy and the Mars Rover! #ASUDayatAZCapitol Arizona State University Inst of HumanOrigins

Lucy photo bombing Sparky at Arizona State University #ASUDayatAZCapitol Thank you legislators for attending. Inst of HumanOrigins

Science brain power Arizona State University! thank you Svante Paabo and Paul Davies for visiting #IHO w Dr. Donald Johanson

IHO fossil jaw discovery turns out to be earliest evidence of genus Homo—2.8 million yrs old. bit.ly/1FXWPft

Still loving Lucy ASUIHO #Maropeng #CradleOfHumanKind #hNaledi

1 month til IHO's NY 2015 event at the famed Explorers Club with Dr. Curtis Marean. Read more bit.ly/1LOm7UT

"Every single person on this earth has the power to change the world." - Emma Thompson #MondayMotivation