daily science facts

The oceans — their sea levels, temperatures and acidity all on the rise — do not read Breitbart News in the United States or the Daily Mail in the United Kingdom, which by spreading science denial put the most vulnerable at risk.
—  Cynthia Barnett’s Op-Ed in the LA Times, read here. 

The Moon 🌓 as we call it is the only natural satellite that orbits the Earth 🌎. The Moon is in synchronous rotation with Earth meaning the same side is always facing the Earth. The Moon comes out around the same time each month due to its orbital period of 27.3 days. Without an atmosphere surface temperatures 🌡can fluctuate dramatically on the Moon going from 123°C (253.4°F) in the sun 🌝to -233°C (-378.4°F) on the dark side🌚.

Today’s Daily Science Fact is about sputum.


When people cough violently, particularly sick people, they can bring up some of the mucus that coats the throat and lungs, known as sputum. Sputum is very often gooey and strangely pale and stringy. This strange consistency is due to one of sputum’s major components – DNA. Naked human DNA.


This DNA is produced by neutrophils, a type of white blood cell, that cast copies of their own genes out in NETs – Neutrophil Extracellular Traps – in order to catch bacteria. DNA is negatively charged, and bacteria, which are positively charged, stick to the NET surface and can be coughed up. The existence of NETs actually makes it very difficult to sequence the genome of bacteria in the throat and lungs, because the samples are always so full of the host’s own DNA.

Today's daily science fact is about plaque and heart disease.

There is a causal link between tooth plaque and certain types of heart disease.

The reason is immune. The immune system identifies bacterial invaders based on proteins in their membrane (proteins the immune system reacts to are called antigens), and some bacteria that cause and live in plaque have proteins very similar to those in the cells that make up heart valves. If these bacteria get into the bloodstream through damaged gums (which is more likely to happen if they build up in plaque), there is a slight chance that the immune system will end up mounting a defense against its own heart cells, and slowly damage the heart.

Is it herpes awareness week?

 In the past 24 hours, sixteen people have liked or reblogged the Daily Science Fact about herpes ( http://dailysciencefacts.tumblr.com/post/27104912276/todays-daily-science-fact-is-about-herpes ). Only one like and no reblogs have not been about herpes. Two new people have started following Daily Science Facts, presumably due to herpes.

Why is herpes so damn popular all of a sudden?!