If rocks could talk – what could they tell us about the earth, history and maybe ourselves? Find out as collections manager Alex Hangsterfer and curator Richard Norris reveal the treasure trove of samples housed at Scripps. Hear some of the fascinating stories behind how these samples were collected and learn about the incredible variety of investigations that they enable – from plate tectonics to earthquakes to archaeology.
The effects of climate change on fauna and flora across the globe are more and more evident – the Pika has changed its range, and may disappear, sea stars have been visited by a withering collapse in population, insects from bark beetles to mosquitoes are inhabiting new territories, bringing disease to humans and destruction to forests. And close to home, the ocean temperature recently hit the highest temperature ever recorded.
As our changing climate provides a natural laboratory for examining how organisms evolve adaptations to environmental extremes, Scripps’ Oceanography’s Ron Burton asks: can evolution keep up with rapid climate change or are most species likely to go extinct as temperatures rise?
Ron shares about the cutting-edge genetic tools he uses to understand how populations of tidepool animals cope with rapid temperature changes and how evolution has shaped those responses across the geographic range of each species.
We “behaviorally modern humans” likely emerged more than 100,000 years ago in Africa, spread across that continent and eventually all over the planet, effectively replacing all closely related potentially competitive species. Among many possible explanations, was the co-evolution of the human mind with tool use and technology – ranging all the way from simple stone tools millions of years ago, to computers today.
Speakers in this series addresses this important process at all levels, from molecules to brain imaging, beginning with the potential link between early stone tool use and the parallel expansion of the human brain, to the control of fire and the invention of projectile weapons, all the way through reading and writing to current day technologies such as computers and 3D reality–perhaps with a look to the potential future of the human mind.
Browse more programs in CARTA: Impact of Tool Use and Technology on the Evolution of the Human Mind
Advertisers are always looking to better understand consumers’ preferences and decision making. The application of neuroscience knowledge and techniques to answer market and media research questions is not new but in our digital age, the practice raises new questions about privacy, informed consent, and consumer autonomy in decision making. Dr. Carl Marci, Chief Neuroscientist at Nielsen explores the ethical concerns that arise and explains some of the tools used by advertisers in this growing field.
In short, they interbred, according to Svante Pääbo, a Swedish biologist and pioneer of paleogenetics, the study of preserved genetic material from the remains of ancient organisms, including ancient human DNA. He has served as director of the Department of Evolutionary Genetics at the Max Planck Institute for Evolutionary Anthropology in Leipzig, Germany, since 1997.
He explains in this lecture that Neanderthals and Denisovans have a common ancestor in Africa. About half a million years ago, these species of humans came out of Africa and evolved into what we call Neanderthals in Western Eurasia and Denisovans in Eastern Eurasia. Much later modern humans appeared in Africa and then spread, initially to the Middle East, then to Eurasia where they encountered Neanderthals and Denisovans. Eventually, those earlier species became extinct, replaced by modern humans.
Pääbo’s lab famously retrieved and sequenced ancient Neanderthal DNA and produced a high-quality genome sequence that allowed for the reconstruction of the recent evolutionary history of our species. Once the genome was sequenced and studied it became apparent that ancient and modern humans interbred. In fact, most present-day humans have some Neanderthal DNA.
Svante Pääbo’s was selected by Scripps Institution of Oceanography at the UC San Diego as the recipient of the 2018 Nierenberg Prize for Science in the Public Interest. He gave this fascinating lecture on that occasion.