Search results for “K-T extinction”

T Cell Types and Their Functions

For more Science Videos: https://lt.org/ * T cells are an important component of the body’s immune system. As ERIKA PEARCE explains, there are several types of T cells which form consecutively during the immune response and serve different purposes. Effector T cells combat pathogens from infections

NOVA scienceNOW: Mass Extinction

This video segment adapted from NOVA scienceNOW examines a developing theory that might explain a 250-million-year-old "murder mystery." While several possible causes have been considered for the mass extinction that occurred at the end of the Permian period, the scientists featured in the video thi

How Many Mass Extinctions Have Happened On Earth?

Why did the dinosaurs go extinct? Will WE go extinct? Follow Life Noggin! Facebook: https://facebook.com/LifeNoggin/ Instagram: https://instagram.com/lifenoggin/ Twitter: https://twitter.com/lifenoggin Click here to see more videos: https://alugha.com/LifeNoggin We are LIFE NOGGIN! An animated

Species extinction in the course of time

Over the last 500 million years, biodiversity on Earth has been constantly changing. Like a fever curve, this has been going uphill and some times steeply downhill. These downward outliers are described as the five great mass extinctions. Authors: 3sat/nano/scobel/Harald Zander/Claus Ast/Jochen Sch

What would happen if you didn’t sleep? - Claudia Aguirre

View full lesson: http://ed.ted.com/lessons/what-would-happen-if-you-didn-t-sleep-claudia-aguirre In the United States, it’s estimated that 30 percent of adults and 66 percent of adolescents are regularly sleep-deprived. This isn’t just a minor inconvenience: staying awake can cause serious bodily

Who Owns Your DNA? (YOU DON’T)

Your DNA defines you, but do you REALLY own it? Click here to see more videos: https://alugha.com/LifeNoggin Follow Life Noggin! Facebook: https://www.facebook.com/LifeNoggin/?ref=br_rs Instagram: https://instagram.com/lifenoggin/ Twitter: https://twitter.com/lifenoggin Official Website: https://

8 Things Mentally Strong People Don’t Do

When we talk about mentally strong people, we mean someone who knows how to draw healthy boundaries with others, who know how to stay true to their inner values, and who know how to navigate difficult situations in life like past regrets, etc. When you become mentally stronger, you can have a more f

NOVA scienceNOW: T. Rex Blood?

In this video segment adapted from NOVA scienceNOW, learn how scientists are hoping to better understand the biology of dinosaurs by studying the insides of fossil bones. Hear about the accidental discovery of dinosaur soft tissue by paleontologist Dr. Mary Schweitzer, and how this tissue enables sc

Why We Shouldn’t Cut Gravity In Half

We take gravity for granted. What would happen if Earth's gravity was cut in half? Click here to see more videos: https://alugha.com/LifeNoggin Follow Life Noggin! Instagram: https://instagram.com/lifenoggin/ Twitter: https://twitter.com/lifenoggin Official Website: https://lnstudios.co/ We ar