Two ocean hot spots have been linked to the hottest summers on record for the central United States, in 1934 and 1936. Those two summers and the "Dust Bowl" that saw farming devastated were accompanied by the worst drought in America of the last 1,000 years.

In 1934, giant dust storms and drought covered more than 75 percent of the country and affected 27 states severely. Silt from storms even covered the decks of ships 200 miles off the east coast. 

In biology class you learned that DNA (deoxyribonucleic acid) is the main component of our genetic material and it is formed by combining four parts: A, C, G and T (adenine, cytosine, guanine and thymine), called bases of DNA. These bases combine in thousands of possible sequences to provide the genetic variability that enables the wealth of aspects and functions of living beings.

In the early 1980s, the four "classic" bases of DNA sort of got a fifth - methyl-cytosine (mC), derived from cytosine, which was later linked to epigenetic mechanisms because it is able to switch genes on or off depending on the physiological needs of each tissue.

Scholars say they have found a way to prevent procrastination.

The trick? Think of the future as now. If you decide you will read this article tomorrow, you are already behind. 

Making a series of relatively minor and realistic changes to UK diets would reduce UK diet-related greenhouse gas emissions by nearly 20 percent and extend average life expectancy by eight months, according to new model. 

When a mirror reflects light, it experiences a slight push but it is negligible in our everyday lives. Our furniture is not moving because due to radiation pressure of light, a 100 Watt light-bulb causes a radiation pressure that is only a trillionth (one part to 1000000000000) of the normal atmospheric pressure.

Producing sperm is necessary to procreate and but procreation only happens the first time in those birth control public awareness films. In most cases, sperm must be produced continuously, and for an extended period of time, to insure reproduction.

A new study reveals that there are differences in reactivity to retinoic acid in spermatogonial stem cells, and these differences are a key factor to the persistence of sperm production with inexhaustible stem cells.