Two Chinese girls, who we'll call Lulu and Nana to protect their privacy, were born healthy a few weeks ago. Their mother Grace started her pregnancy by regular IVF with one difference: right after sending her husband's sperm into her eggs, an embryologist also sent in CRISPR/Cas9 protein and instructions to perform a gene surgery intended to protect the girls from future HIV infection. The surgery reproduces a natural genetic variation shared by more than 100 million people of primarily…
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Aquaponics, a system of farming that uses no soil, also uses far less water than traditional agriculture. But while the technique is gaining attention, it remains a very niche way to grow produce due to economic limitations. Special correspondent Cat Wise reports from Half Moon Bay, California.
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Why is biodiversity and species richness important? Healthy ecosystems require a large, diverse group of organisms, each doing their part.
For more biodiversity tutorials, visit http://bit.ly/cas-khan.
Hank takes a break from the desk to bring you to the lab in order to demonstrate some important points about the practical side of chemistry - experimentation in the laboratory. You'll learn what to wear in the lab, how to dispose of chemicals safely, how to avoid the most common accidents, how to pour solutions properly, what the HazMat diamond means, what an MSDS is, and how to use a fume hood. And as a reward for sticking with him through this maybe less-than-thrilling lecture, you'll see…
JPL engineers are working on a small helicopter that could ‘scout’ a trail for future Mars rovers, but getting a chopper that could fly in the Martian atmosphere is tricky. Episode 2 of Crazy Engineering.
Credit: NASA
Learn how to create an XY scatter plot using Excel. To download the file used in this video, visit the following page: https://www.vertex42.com/edu/excel-tutorials-for-beginners.html
0:00 Scatter plots show how two numerical values are related
0:29 Scatter graph examples
0:39 How to set up the data table in Excel
1:18 Insert the scatter chart
1:31 Add a title to the chart
1:38 Add labels for the X-axis and Y-axis
2:10 Display more than one set of data in the scatter plot
3:07 Add a legend to…
Learn how to create an XY scatter plot in Google Sheets. Download the file used in this video from the following page: https://www.vertex42.com/edu/google-sheets-for-students.html
0:00 Scatter Plot Example
0:30 Start by creating a data table
1:50 Insert a Scatter Plot using the Explore feature or Insert Chart
2:31 Customize and style the chart
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Forests cover about 30% of the planet, but deforestation is clearing these essential habitats on a massive scale. What is deforestation? Find out the causes, effects, and solutions to deforestation.
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Dan Burns explains his space-time warping demo at a PTSOS workshop at Los Gatos High School, on March 10, 2012. Thanks to Shannon Range from the Gravity Probe B program for creating the original demonstration which he shared with Dan in 2004.
Information on how to make your own Spacetime Simulator can be found here: https://youtu.be/2JOf1ub9US0