Word: impactful
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Dates: during 1980-1989
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...study results will help build the computer software planning models which will be installed in the various schools. The final step of the project will be studying the impact of computers on the learning process...
...hoped to elaborate on the Alvarez hypothesis by detecting trace amounts of rare noble gases, like neon and xenon, in the layer of Cretaceous clay deposited during roughly the same period that the dinosaurs became extinct. They were seeking to identify the nature of the object responsible for the impact. Because noble gases collect in carbon particles, the scientists isolated the carbon in Cretaceous sediment taken from Denmark, Spain and New Zealand. To their surprise, all three samples contained carbon that had been deposited at a rate 10,000 times as great as carbon in the layers immediately above...
Disaster began when the celestial intruder crashed into what is now the Bering Sea, possibly creating a crater some 100 miles wide. The stupefying force of the impact, estimated at 100 million megatons, would have generated an enormous 3,000 degrees F fireball that would have spread outward at the speed of sound, igniting forest fires from North America to Asia. Several hundred billion tons of plants and animals would have been incinerated, sending great scarves of black smoke to join the impact dust in the stratosphere and circulate around the globe. What is more, because soot does not rain...
...minute preview of a new Reagan Administration plan for defusing the Third World debt bomb. Meanwhile, in New York City, a group of bankers representing 600 international lenders agreed to grant Mexico an emergency six-month extension on nearly $1 billion of IOUs. While those events unfolded, the sharp impact of another new Washington strategy was being felt around the world. Spurred by a U.S. commitment to reduce the foreign exchange value of the dollar, the greenback tumbled last week to its lowest level in several years against other major currencies...
...early as the 1960s, Moscow had developed an experimental "gun" designed to shoot chunks of metal at speeds high enough to destroy missiles by sheer impact. The U.S. now has similar "rail guns," but they were not developed until the 1980s...