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International Atomic Energy Agency
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The IAEA works to promote safe, secure and peaceful nuclear technologies.
The IAEA works to promote safe, secure and peaceful nuclear technologies.

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86 years ago ‪#‎onthisday, the existence of neutrinos was first postulated by Austrian physicist Wolfgang Pauli.

In an open letter sent on 4 December 1930 to a group of nuclear physicists, Pauli put forward the existence of an extremely light and very weak particle with no electric charge in the nucleus of atoms, which he called a neutron, to explain the continuous spectrum of beta decay. In 1934, Enrico Fermi took up this idea and incorporated this postulated particle into his beta decay theory, naming it neutrino, which means ‘little neutral one’ in Italian. However, it was not until 1956 that Pauli’s prediction was finally confirmed by physicist Frederick Reines and his colleagues.

These little neutral particles have been used since the mid-20th century to probe environments in space and understand astronomical phenomena, like the conditions of the Sun’s core, and to further scientific investigations in particle physics and the matter of the universe.
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A diamond battery made from radioactive waste? That’s right. Read more on this work from University of Bristol​. http://ow.ly/lztu306KTTs

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At 3:25 pm #OnThisDay in 1942, the world entered the “Atomic Age” with the first controlled, self-sustaining nuclear chain reaction at Chicago Pile-1.

After more than two weeks of relentless work underneath the football stadium of the University of Chicago by scientists, the pile finally went critical as the recorder started measuring rapidly increasing electric current. After 28 minutes the reaction was halted before it passed the pre-set safety level.

Although the initial chain reaction was too weak to even power a single light bulb, the Chicago Pile-1 project was a significant milestone in the development of nuclear energy, ushering in a new era of scientific and technological advances.

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Today is World AIDS day. #WAD2016

The theme for this year is “HIV stigma: not retro, just wrong.” Thanks to advances in medical technology over the last two decades, AIDS is no longer an untreatable disease. But there are still many stigmas associated with people who are HIV positive that make their lives difficult.

For years the IAEA has contributed to ‪#‎FastTrack an end to AIDS worldwide. In collaboration with the World Health Organization (WHO) and other international organizations, the IAEA promotes the use of isotopic and nuclear techniques for early identification and management of HIV. A recent example is an IAEA-supported research study that concluded that maternal HIV status does not influence the growth of HIV-uninfected children. Read more here: https://goo.gl/E4ojwu


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We stand ready to respond to our Member States’ needs for support related to nuclear security, says IAEA Director of Nuclear Security. 

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With 300 patients a day, solid training is critical to keeping up high standards of care. Read how they’re doing it in Myanmar. 

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This small fly cost the Dominican Republic US $ 40 million last year. But now the outbreak is contained and business is back to normal, only 10 months after. How, you ask? Watch our video or get the full story here: https://goo.gl/iKAfXx

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Happy birthday to J. Ernest Wilkins Jr, the prolific mathematician who developed key models for shielding against gamma radiation.

Wilkins Jr became one of the youngest students to ever study at the @UniversityofChicago, earning a bachelor’s degree in mathematics by age 17 and a Ph.D. in the same subject two years later. This was the first step into his decades-long career in mathematics, physics and engineering.

One of Wilkins Jr’s most notable accomplishments is his study and development of mathematical models for the calculation of radiation absorption by physical materials. These models have helped researchers and inventors understand the science behind the design of nuclear reactors and radiation shields to keep people and the environment safe.
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Creating new forms of matter atom by atom might soon be possible thanks to rethink electron microscopy. Find out more!

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Maximizing the benefits research reactors bring to society — this was one of the objectives of a workshop held in Vienna last week. Read on to learn how research reactors are changing with the times.
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