Pushcart prize winning poet, translator and professor Ravi Shankar has published, edited or has forthcoming over 15 books, including the Muse India award-winning translations of 9th century Tamil poet/saint, Andal, 'The Autobiography of...

Fusion rocket engines could take a manned crew to Mars in 30 to 90 days, NASA-funded scientists at the University of Washington say. The scientists are building a fusion-driven rocket system that pulses at a rate of one blast per minute,...

Ketchup is one of the world's most popular condiments. This sweet and tangy sauce usually has a tomato base these days, but the original ketchup (or ke-tsiap) was a pickled fish sauce! Learn more about ketchup and try making it at home.

The people of the United Arab Emirates were amazed by torrential rains falling on their parched desert.

The famous Crab Nebula supernova remnant has erupted in an enormous flare five times more powerful than any previously seen from the object. The outburst was first detected by NASA's Fermi Gamma-ray Space Telescope on April 12...

Everyone has experienced stress, which is your body’s response to a demand made on it. A surge of hormones is released when people are stressed and that helps them deal with the danger or threat, but it also affects the nervous system...

The Hubble Space Telescope has been revealing the secrets of the universe for over 30 years, but it turns out Hubble has some secrets of its own!



The question is: Hubble observed what...

Black widow spiders and their Australian cousins, known as redbacks, are notorious for an unsettling tendency to kill and devour their male partners. Astronomers have noted similar behavior among two rare breeds of binary...

Apple is pushing the medical benefits of the Apple Watch pretty hard, but we have questions about just how useful the watch's electrocardiogram feature really is. Aaron digs into the research on just how much the device is doing.

A pulse of water released down the lower reaches of the Colorado River last spring resulted in more than a 40 percent increase in green vegetation where the water flowed, as seen by the Landsat 8 satellite. The March 2014 release of...

In this video, we'll take a look inside a servo motor to see what's inside. This video is a great way to learn about servo motors and what they do! If you're interested in motors or electronics, this video is a great way to learn about...

This video explains the vital role of the heart as the body's pump, constantly circulating blood throughout the body. It highlights how the heart's rhythmic beats help propel blood through tubes in the arm and deliver oxygen to the...

A description of Pulse Width Modulation (PWM) and how it is used with Arduino.

The Global Ecosystem Dynamics Investigation (GEDI) is a lidar instrument that sends laser pulses down to Earth, where they penetrate the globe's temperate and tropical forests. The laser beams ricochet off the...

This nugget explains through mathematical expressions how two waveforms add up to give a net waveform.

The GLAST mission launched on June 11, 2008 and has been returning remarkable and revolutionary discoveries ever since. Recently renamed to the Fermi Space Telescope, after Nobel Prize winner Enrico Fermi, the mission is expected to...

Want to know the 3D shape of terrain on another planet? Want to study the height and density of Earth's forests? An amazing tool called LIDAR can help! Learn more in this video.



This version of the video is presented in...

Want to know the 3D shape of terrain on another planet? Want to study the height and density of Earth's forests? An amazing tool called LIDAR can help! Learn more in this video.<b<b<br/>r/>r/>

The Lunar Orbiter Laser Altimeter (LOLA) instrument on board NASA's LRO spacecraft will be responsible for building the highest detail topography available of the lunar terrain. In this video David Smith, LOLA's Principal Investigator,...

In this video, we learn how remote controls work by sending signals through electromagnetic signals. The remote control emits infrared radiation, which is received by a small infrared light detector on the device being operated. By...

This video explains activity 14- solution.<br<br/>/>

This clip is from the chapter "Ultrasonic Sensor - Measure Distances" of the series "Arduino for Beginners - 2022 Complete Course".This section explains measure distances.

This video explains how the ultrasonic sensor works + pulseIn() function.
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This clip is from the chapter "Ultrasonic Sensor - Measure Distances" of the series "Arduino for Beginners - 2022 Complete Course".This section...

Neutron stars are formed from the core of some starrs. Neutron stars generally have a radius of only around 12 km. With masses exceeding 1.4 times that of the Sun, these are some of the densest objects in the Universe. A tablespoonful of...

In this video, we introduce the umbrella term, cardiovascular disease and then explore the basics of peripheral vascular disease (PVD).