In one of his Great Minds episodes of the SciShow, Hank Green salutes Henrietta Swan Leavitt. A graduate of Radcliffe College, Leavitt was one of a number of volunteer women astronomers who were allowed in 1893 to serve as “computers” at Harvard College Observatory, doing tedious work male scientists wouldn’t do, and ultimately making a discovery now known as Leavitt’s Law, which allows us to measure the distance to stars.
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Believe it or not, your toilet is actually one of the cleanest places in your house, despite its function. Research has shown that cutting boards, dish towels and sponges have FAR more fecal bacteria on them than your toilet seat, highlighting the sophisticated scientific ways we have of detecting bacteria as well as the sophisticated natural ways our bodies have of taking care of low levels of that harmful bacteria. Hank Green reports in the SciShow.
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Hank Green pays tribute to some of the great scientific minds we lost in 2012, beginning with astronauts Neil Armstrong and Sally Ride. Green concludes by apologizing for some mistakes made in recent SciShow episodes.
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In this episode of SciShow, Hank Green gives us an inclusive overview of how everything in the universe is thought to have begun, and how cosmologists predict it will all come to an end. Now get happy!
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In this episode of the SciShow, Hank Green tells us about the three physics experiments that changed how we see the world.
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Hank Green of SciShow summarizes the five reasons why infrared telescopes were supposed to be impossible to build, and then describes how a team of scientists and engineers overcame those obstacles to build the James Webb Space Telescope.
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Hank Green of SciShow is all about Mars, and Elon Musk, the Paypal multi-millionaire who founded SpaceX, has some plans for colonizing the Red Planet that have got Hank very excited.
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Meanwhile, NASA is throwing cold water on growing speculation about a possible discovery of life — or signs of life — on Mars.
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Chemistry is the study of matter — stuff and how it interacts with other stuff. Even though chemistry doesn’t make a lot of news these days, chemists are making discoveries that change lives all the time. If the SciShow‘s Hank Green had to narrow down all of chemistry’s flashes of brilliance into the most awesome experiments in history, he would narrow it down to these three.
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Not only is the universe expanding, but the rate of expansion keeps accelerating. Hank Green from the SciShow says we can blame, or thank, dark energy — the most mysterious force in the universe — for this phenomenon. Thought to make up more than 70 percent of the energy in the whole universe, Hank describes how dark energy was theorized to exist and how scientists are trying to explain it.
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In this episode of SciShow, Hank Green reports on the discovery by NASA scientists of the most distant, oldest galaxy ever observed.
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