When it comes to renewable energy, Hawaii stands out, with 15 percent of the state's power coming from solar and wind. Now, the state may be pioneering another renewable form of energy: ocean waves. NewsHour Weekend's Megan Thompson visited a naval base in Hawaii, where researchers are testing a new frontier of wave power technology.
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…
Extreme cold on Nov. 2010 reminded me of what Al Gore was saying on the matter on his presentations that led to the documentary "An Inconvenient Truth". In this abstract, he's discussing what would happen if -eventually- Greenland would start melting...
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http://www.ted.com With wisdom and wit, Anupam Mishra talks about the amazing feats of engineering built centuries ago by the people of India's Golden Desert to harvest water. These structures are still used today -- and are often superior to modern water megaprojects.
TEDTalks is a daily video podcast of the best talks and performances from the TED Conference, where the world's leading thinkers and doers give the talk of their lives in 18 minutes. Featured speakers have included Al Gore on…
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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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After youve spent weeks and months crafting, calculating and calibrating your project, strangers arrives to evaluate your baby up and down. Not to worry; these folks are actually science fair judges. Theyre nice, professional and really, really smart. And they are interested in you. Just be yourself, answer their questions candidly, and embrace both their compliments and ideas. Remember, theyre learning from you, too, science superstar. You may well become the worlds expert in your area!
Here is what is really wonderful about science fairs: You participate because you want to participate. You choose your own project because its something you want to explore. You make it work. And because a science fair project allows you to test drive a college major or a career; it gives you training wheels for the real world. Also, science fairs connect you to new friends and can distinguish your future college application. Finally, science fairs are fun roll-up-your-sleeve,…
Bass Guitar strings filmed in 1200 frames per second slow motion. Notice the secondary wave travelling up and down the length of the string on top of the other vibrations. The string also twists in a third wave that travels up and down the string if you look closely.
Normal blood pressure is important for proper blood flow to the body’s organs and tissues. The force of the blood on the walls of the arteries is called blood pressure. Blood pressure is measured both as the heart contracts, which is called systole, and as it relaxes, which is called diastole. Normal blood pressure is considered to be a systolic blood pressure of 115 millimeters of mercury a diastolic pressure of 70 millimeters of mercury (stated as "115 over 70"). If an individual were to have…
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