The Rules that Govern Life on Earth - with Sean B Carroll

One of my favorite Sean Carrolls

The Serengeti Rules (Rules of regulation / How life works / to intervene in ecosystems) 1). Keystone Species: Some animals are more equal than others. Keystone species regulate community diversity. 2). Trophic Cascades: Some species have strong indirect effects on others through trophic cascades. 3). Density: The regulation of some species depends upon their density (ie. numbers and distribution). 4). Nature is resilient: Given a chance (habitat, protection, time), populations can rebound dramatically. In general... * Identify the key players (/species, factors, molecules) that regulate a process. * Identify the rules that govern the interactions. * Replace what is missing or fix broken links. A very informative and interesting talk on evolutionary biology by Sean B. Carroll :)

I normally don't watch Biology stuff but watched this anyway due to YouTube's suggestion playlist. I think their algorithm knows more about me than myself. Really enjoyed this lecture and learnt something new today. Thanks to the Ri.

This video was my first encounter with Dr. Carroll, watching a few years ago. Just re-watching with my wife. He became one of my favorite writers as well. For example: Brave Genius, Remarkable Creatures, Endless Forms Most Beautiful. I read these books, and yinz all should too!

THIS MAN IS A GREAT TEACHER, SCIENTIST AND EDUCATOR! Look at the way he receives the answers of the kids!

Wow, Sean Caroll has his alter ego - by day he is an evolutionary biologists; By night, a Cosmologist and physicist... And in order not to confuse himself he changes his middle name... and a beard.

This lecture carries an extremely positive message, that if we make the right corrections, damage to nature can be readily fixed. I was very impressed by the style and content of this lecture, and by no means did I think it was unnecessarily padded as some commenters below suggest.

this seems to be one of the Ri Christmas lectures, which are primarily for kids. I particularly like the way he doesn't at all talk 'down' to his audience. Great talk.

In the Teton and Yellowstone Park not only do the wolves reduce the numbers of browsers but the animals avoid the cover of the aspen and other small trees because the the wolves use the cover to ambush them. The browsers concentrate down in the open prairie of Jackson Hole and Yellowstone valley. The mountain pika are getting a a little extra chance to survive as well because foxes and coyotes, their major predictor, is being driven out by the wolves. It shows that wolves have been a boon for the area in more ways than imagined.

Thanks for the fascinating lecture!

It took this guy about 10 minutes to tell us what his talk was about. I hope he's not disappointed when young people don't watch it! My knowledge of kids, and people generally, is if you haven't got them interested in the first 30 seconds you have missed the boat.

I came for the physicist, stayed for the biologist.

Thanks for sharing this story of the resilience of nature.

Fascinating lecture, now Gorongosa park on my list to see places.

One of the most interesting and engaging lectures in the series, imho.

Dr. Carroll is an excellent speaker, with an interesting, thoughtful, and optimistic message. Well worth an hour of time!

What a wonderful presentation - there is hope after all! Thanks for uploading!

His words explained the difficulty terms of science in easier to understand. It 's a great way and in more interesting 👏🏻👏🏻👏🏻.

I am currently studying this in 3rd year to understand how we can build integrated multitrophic agri/aquacultural systems (IMAS) to sustainably feed the planet without destroying the keystones of the planet's ecosphere. This talk has also helped me understand my post-graduate goals. If you notice, it was feeding humans that started the degradation of the Serengeti in the first place (the virus from domesticated bovines). The solution is to decouple our food production from the environment, until the food production environment is itself a more bio-diverse ecosphere than it's environment. A simple example might be bird habitat and provision of water. A complex example might be the evolution of various preferential microbial, fungi and plant species migrating into the local environment and attracting wildlife. With properly built food production systems built upon the principals of 'trophic cascade', our inputs into this system need merely be sequestered carbon, pure organic ammonia, and some minerals. Sunlight, autotrophs and atmospheric oxygen does the rest. The output can be whatever you want - fish, crustaceans, molluscs, algal products, most plants - even energy generation. But yeah - you have to hear the idea first, believe in it - and then fund it.

Thank you. this was an awesome lecture. Really eye opening.