Safari Live - Day 129 | National Geographic

[Music] You take this incredible material that lasts for hundreds of years. We use it for a few seconds, a few minutes, and then we throw it away. [Music] [Music] I’m Heather Coldway. I’m a National Geographic fellow, and I’m the science co-lead for the …

Because social media spreads the bad news so incredibly quickly, many people have now become fearful. Beachgoers watched in horror as a violent fight broke out this afternoon. This poor little girl is probably going to need counseling and therapy. I want …

Part B using correct units, explain the meaning of the definite integral. So, it’s the definite integral from zero to tal 40 of the absolute value V of T DT. In the context of the problem, approximate the value of that integral using a right Riemann sum …

Once they were giants. Now, their jokes from FTL trading to Kylie Cosmetics, Theranos, and beyond. We can learn a thing or two from businesses that scaled quickly and came crashing down faster than you can say billionaire. Some of these companies are stil…

Hashem obtained a random sample of students and noticed a positive linear relationship between their ages and their backpack weights. A 95% confidence interval for the slope of the regression line was 0.39 plus or minus 0.23. Hashim wants to use this inte…

Hi everyone! Welcome to the Homeroom live stream. Sal here from Khan Academy. We have a very exciting guest today! We have Tabitha Ross, Pro 2020 National Teacher of the Year. So, if you have questions for what it’s like to be a teacher, especially a teac…