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Antitrust allegations against Facebook's … Tech. Eyad Hallaq, who was 32, was fatally shot just inside the Old City's Lion's Gate on May 30 as he was on his way to the special-needs institution that he attended. Tue, 14 Jul GMT A restart of nuclear testing offers little scientific value to the US and would benefit other countries July 15, marks 75 years since the detonation of the first nuclear bomb. The U. But at the end of the Cold War in , the U.
Although the Senate never ratified the treaty and it never entered into force, all countries that signed the test ban, including the U. But in recent weeks, the Trump administration and Congress have begun debating whether to restart active testing of nuclear weapons on U. Some conservative Republicans have long expressed concerns over the reliability of aging U. Additionally, the U. Some politicians in the U. We are two nuclear weapons researchers — a physicist and an arms control expert — and we believe that there is no value, from either the scientific nor diplomatic perspective, to be gained from resuming testing.
In fact, all the evidence suggests that such a move would threaten U. Why did the US stop testing? Since the Trinity Test in July , the U. These were done to test new weapon designs and also to ensure the reliability of older ones.
When the Cold War ended, the U. The goal of the test ban treaty was to hinder new nations from developing nuclear arsenals and limit the capabilities of nations that already had them. Subcritical testing to maintain the arsenalAfter the U. S moratorium went into effect, the U.
Department of Energy created a massive program called the Stockpile Stewardship Program to maintain the safety and reliability of U. Instead of crudely blowing up weapons to produce a nuclear explosion, scientists at facilities like U1A in Nevada began conducting what are called subcritical tests. There is still a big bang, but no nuclear chain reaction. Rather, these experiments produce data that researchers feed into elaborate supercomputer programs built using the massive amounts of information collected from earlier live tests.
Using these subcritical tests and earlier data, scientists can simulate full-scale detonations with incredible accuracy and monitor the current arsenal without blowing up nuclear warheads. What could be going wrong in the bombs? All nuclear weapons currently in the U. Put simply, hydrogen bombs work by using a smaller nuclear bomb — akin to the bomb dropped on Nagasaki — to detonate a second, much more powerful bomb.
Nearly all the components of a nuclear weapon can be replaced and updated except for one piece — the explosive plutonium core known as the pit. These pits are what trigger the second, larger explosion. Party venues should contact us for commercial subscription discounts. For those looking for parties, see our listings on our Grand Final Party page.