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More than six billion different knot types have been identified by mathematicians and scientists since the 1800s.

Not Your Average Knot Author: Adam Zhang Institution: Georgia Institute of Technology Chemists at the University of Manchester have produced the tightest knot ever created. Published earlier this month in the journal Science, the team led by David Leigh used techniques in synthetic chemistry to braid strands of different molecules into a structure with over […]

More than six billion different knot types have been identified by mathematicians and scientists since the 1800s. Read More »

Judith Love Cohen, who helped create the Abort-Guidance System which rescued the Apollo 13 astronauts, went to work on the day she was in labor. She took a printout of a problem she was working on to the hospital. She called her boss and said she finished the problem and gave birth to Jack Black

Meet Aerospace Engineer Judith Love Cohen Judith Love Cohen was, at various times in her fascinating life, an engineer who worked on the Pioneer, Apollo, and Hubble missions, an author & publisher of books about women in STEM and environmentalism in the 90s, a ballet dancer with the New York Metropolitan Opera Ballet Company, an

Judith Love Cohen, who helped create the Abort-Guidance System which rescued the Apollo 13 astronauts, went to work on the day she was in labor. She took a printout of a problem she was working on to the hospital. She called her boss and said she finished the problem and gave birth to Jack Black Read More »

Each year, 22,000 tons of dust from the Sahara Desert is carried by air currents to the Amazon Rainforest where it is an important source of phosphorus for tropical plants

NASA Satellite Reveals How Much Saharan Dust Feeds Amazon’s Plants What connects Earth’s largest, hottest desert to its largest tropical rain forest? The Sahara Desert is a near-uninterrupted brown band of sand and scrub across the northern third of Africa. The Amazon rain forest is a dense green mass of humid jungle that covers northeast

Each year, 22,000 tons of dust from the Sahara Desert is carried by air currents to the Amazon Rainforest where it is an important source of phosphorus for tropical plants Read More »

NASA’s longest serving female employee since January 1958, Sue Finley, has been an engineer and programmer for space missions since Explorer 1, for missions to the Moon, Sun, all the planets and many other solar system bodies, and recipient of NASA’s Exceptional Public Service Medal.

Susan G. Finley Susan G. Finley, a native Californian, has been an employee of NASA’s Jet Propulsion Laboratory (JPL) since January 1958, making her the longest-serving woman in NASA. Two days before Explorer 1 was launched, Finley began her career with the laboratory as a human computer, calculating rocket launch trajectories by hand. She now

NASA’s longest serving female employee since January 1958, Sue Finley, has been an engineer and programmer for space missions since Explorer 1, for missions to the Moon, Sun, all the planets and many other solar system bodies, and recipient of NASA’s Exceptional Public Service Medal. Read More »

Some ant queens will find a queen with an established nest to kill and impersonate. To sneak into the nest they first find and kill a worker ant for its scent.

Lasius umbratus Lasius umbratus, colloquially known as the yellow shadow ant and yellow lawn ant, is a palearctic species of parasitic ant distributed across Eurasia and the Maghreb region of Africa. It was once thought that this species occurred in North America as well, but comparative genomic studies indicate the Afro-Eurasian and American populations are

Some ant queens will find a queen with an established nest to kill and impersonate. To sneak into the nest they first find and kill a worker ant for its scent. Read More »

In 2014, scientists found a giant 30,000 year old virus in Siberian permafrost. The virus, Pithovirus sibericum, was still infectious and began killing amoebas. This raised concerns that melting or drilling arctic ice could unearth previously undiscovered pathogenic viruses.

Pithovirus Pithovirus, first described in a 2014 paper, is a genus of giant virus known from two species, Pithovirus sibericum, which infects amoebas and Pithovirus massiliensis. It is a double-stranded DNA virus, and is a member of the nucleocytoplasmic large DNA viruses clade. The 2014 discovery was made when a viable specimen was found in

In 2014, scientists found a giant 30,000 year old virus in Siberian permafrost. The virus, Pithovirus sibericum, was still infectious and began killing amoebas. This raised concerns that melting or drilling arctic ice could unearth previously undiscovered pathogenic viruses. Read More »

In 1969, at the height of the Cold War, the Apollo 11 crew carried commemorative medals to the moon to honor two Soviet cosmonauts who died as part of the USSR’s human spaceflight program

Statement About Honoring American and Russian Space Heroes During the Apollo 11 Mission THE TWO MEN we hope will set foot on the moon represent all mankind. Their achievement will be the world’s achievement. It is fitting, therefore, that the first lunar explorers carry with them some recognition of the sacrifice made by other space

In 1969, at the height of the Cold War, the Apollo 11 crew carried commemorative medals to the moon to honor two Soviet cosmonauts who died as part of the USSR’s human spaceflight program Read More »

Bill Nye (of Science Guy fame) invented a hydraulic component used on the 747 airliners, and holds three patents for other inventions.

Bill Nye This article is about the American science educator. For the British actor, see Bill Nighy. For other people, see Bill Nye (disambiguation). William Sanford Nye (born November 27, 1955), popularly known as Bill Nye the Science Guy, is an American mechanical engineer, science communicator, and television presenter. He is best known as the

Bill Nye (of Science Guy fame) invented a hydraulic component used on the 747 airliners, and holds three patents for other inventions. Read More »

The 2011 earthquake off the coast of Japan was so powerful – measuring almost 9.0 on the Richter scale – it moved Japan 8 feet closer to North America and shifted the planet on its axis, causing the length of a day to shorten by almost 1.8 microseconds

Quake moved Japan coast 8 feet, shifted Earth’s axis (CNN) — The powerful earthquake that unleashed a devastating tsunami Friday appears to have moved the main island of Japan by 8 feet (2.4 meters) and shifted the Earth on its axis. “At this point, we know that one GPS station moved (8 feet), and we

The 2011 earthquake off the coast of Japan was so powerful – measuring almost 9.0 on the Richter scale – it moved Japan 8 feet closer to North America and shifted the planet on its axis, causing the length of a day to shorten by almost 1.8 microseconds Read More »

Purple is a “non-spectral color”, which means that it exists only in our minds: there is no wavelength of light that corresponds to it. Our brain perceives purple when it sees a mixture of strong red and strong blue light, without any green.

Color Perception The properties of color which are inherently distinguishable by the human eye are hue, saturation, and brightness. While we know that the spectral colors can be one-to-one correlated with light wavelength, the perception of light with multiple wavelengths is more complicated. It is found that many different combinations of light wavelengths can produce

Purple is a “non-spectral color”, which means that it exists only in our minds: there is no wavelength of light that corresponds to it. Our brain perceives purple when it sees a mixture of strong red and strong blue light, without any green. Read More »