Petey Collier

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What is the second law of thermodynamics?

Thermodynamics is the study of heat and energy. At its heart are laws that describe how energy moves around within a system, whether an atom, a hurricane or a black hole. The first law describes how energy cannot be created or destroyed, merely transformed from one kind to another. The second law, …

Tech and Science

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Science

May guide to the bright planets

Jupiter rules! In May 2018, the king planet shines at its brightest best for the year and is out all night. Venus blazes in early evening. Saturn and …

Astronomy

Drug detectives: scientists want to crowdsource the discovery of new antibiotics

The ILIAD project looks to amass an army of citizen scientists<p>The last time we caught up with Josiah Zayner, he was busy devising a musical instrument that produces melodies based on the reactions of plant proteins to light. Now Zayner, a biophysicist and incoming synthetic biology fellow at NASA, …

Search tool finds pics of you based on tag relationships - Futurity

A new algorithm could profoundly change the way we find photos among the billions on social media sites such as Facebook and Flickr.

The truth about sex, lies and surveys

The Natsal study of British sexual behaviour produced some intriguing revelations. But should we believe them?<p>Men think about sex once every seven seconds. Or is it every five? One in 10 men is gay. Women think about <b>sex</b> far less often than men. When it comes to sexual fantasies, men tend to be more …

APOD: The Colorful Clouds of Rho Ophiuchi (2013 Dec 03) Image Credit & Copyright: Rafael Defavari http://apod.nasa.gov/apod/ap131203.html Explanation: The many spectacular colors of the Rho Ophiuchi (oh'-fee-yu-kee) clouds highlight the many processes that occur there. The blue regions shine primarily by reflected light. Blue light from the star Rho Ophiuchi and nearby stars reflects more efficiently off this portion of the nebula than red light. The Earth's daytime sky appears blue for the same reason. The red and yellow regions shine primarily because of emission from the nebula's atomic and molecular gas. Light from nearby blue stars - more energetic than the bright star Antares - knocks electrons away from the gas, which then shines when the electrons recombine with the gas. The dark brown regions are caused by dust grains - born in young stellar atmospheres - which effectively block light emitted behind them. The Rho Ophiuchi star clouds, well in front of the globular cluster M4 visible above on lower left, are even more colorful than humans can see - the clouds emits light in every wavelength band from the radio to the gamma-ray. http://500px.com/rafaeldefavari Starship Asterisk* • APOD Discussion Page http://asterisk.apod.com/discuss_apod.php?date=131203 #APOD

New contraceptive pill for men

A new pill for men could work as a temporary vasectomy and allow men to share the task of family planning without affecting their fertility, research suggests<p>A new contraceptive pill for men that won’t affect libido or virility could be developed.<p>The pill works by stopping sperm being released, …

A deadly disease could travel at jet speed around the world. How do we stop it in time?

Walk past the endless rows of vegetables, past the dozens of stalls selling every possible part of a pig and, at the centre of Cao Lanh city's market, a woman is doing a brisk trade in selling rats for food. Two cages swarm with them on a table next to her. Live frogs are available too, and, on the …

Wormholes and Quantum Entanglement May Be Linked

This advance is so meta. Theoretical physicists have forged a connection between the concept of entanglement—itself a mysterious quantum mechanical …

Striking differences in brain wiring between men and women

Male brains facilitate connectivity between perception and coordinated action. Female brains facilitate communication between the analytical and the …

The Brain

Ready — Or Not. Abrupt Climate Changes Worry Scientists Most

An expert panel at the National Academy of Sciences is calling for an early warning system to alert us to abrupt and potentially catastrophic events triggered by climate change.<p>The committee says science can anticipate some major changes to the Earth that could affect everything from agriculture to …