SciShow
How Safe Are Pesticides, Really?
If you’ve heard anything about pesticides, it’s probably about how toxic they are. But they make growing food more cost-effective, so when some make it into your groceries, how bad can they be?
3Blue1Brown
Why do prime numbers make these spirals?
A curious pattern in polar plots with prime numbers, together with discussion of Dirichlet's theorem
SciShow
How Safe Are Pesticides, Really?
If you’ve heard anything about pesticides, it’s probably about how toxic they are. But they make growing food more cost-effective, so when some make it into your groceries, how bad can they be?
SciShow
What Are Eye Boogers?
Eye boogers: Not the most glamorous of bodily secretions, but important all the same. Learn why the heck you have sand in your eyes in the morning in this episode of Quick Questions.
Curated Video
Filtration and Evaporation
We use filtration and evaporation to separate out a mixture of water, sand and salt. The sand is removed using filtration, as it did not dissolve in the water. The remaining solution is heated until the water evaporates, leaving behind...
Curated Video
Mass of Wire Wool
We look at how the mass of wire wool changes when it is burned. Wire wool is almost 99% iron. When we burn it, it combines chemically with oxygen from the air to form iron(III) oxide. The mass of the product is more than the mass of the...
Catalyst University
Selenophosphate Synthetase: Physiology, Biochemistry, and Mechanism
Selenophosphate Synthetase: Physiology, Biochemistry, and Mechanism
Catalyst University
NEW! Cytochrome c and Holocytochrome c Synthase: Biochemistry and Mechanism
NEW! Cytochrome c and Holocytochrome c Synthase: Biochemistry and Mechanism
Catalyst University
Proteasome Mechanism: Threonine Hydrolysis
Proteasome Mechanism: Threonine Hydrolysis
Curated Video
Analyzing and Purifying Water: Required Practical Activities in Chemistry
The video discusses the required practical activities for analyzing and purifying water in a chemistry specification. The focus is on the steps involved in determining the mass of salts dissolved in seawater, measuring the pH of water...
FuseSchool
How To Separate Solutions, Mixtures & Emulsions
Learn the basics about separating solutions, mixtures and emulsions when learning about separation techniques as a part of chemical tests. A solution is a mixture of two or more substances in the same phase. It is formed when a solute...
Professor Dave Explains
Protein Structure
Everyone has heard of proteins. What are they on the molecular level? They're polymers of amino acids, of course. They make up most of your body, so we have to understand their structure very well! Check this out to learn the hierarchy...
Curated Video
Sister-in-law and ex-girlfriend Hallie Biden becomes key witness in Hunter Biden's gun trial
Hunter Biden outside federal court with his wife, Melissa Cohen Biden, in Wilmington, Delaware.
Curated Video
Beau Biden's widow, Hallie, testifies in federal trial about disposing of Hunter's gun
Prosecutors in Hunter Biden’s federal gun trial are getting close to wrapping up their case. The president's son is accused of lying about his drug use on a federal form to purchase a gun in 2018. (Scripps News)
Getty Images
Steam Locomotive On Hill
Steam locomotive dumps slag on a hill which stacked by mineral waste residue from 1955, July 06, 2015, Fuxin, Liaoning Province, China. Fuxin is a city raised by coal mine from 1950s after the found of People's Republic of China, the...
Getty Images
Steam Locomotive On Hill
Steam locomotive dumps slag on a hill which stacked by mineral waste residue from 1955, July 06, 2015, Fuxin, Liaoning Province, China. Fuxin is a city raised by coal mine from 1950s after the found of People's Republic of China, the...