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|1739||Russia signs a treaty with the Turks, ending a three-year conflict between the two countries.|
|1776||Congress borrows five million dollars to halt the rapid depreciation of paper money in the colonies.|
|1862||At the Battle of Corinth, in Mississippi, a Union army defeats the Confederates.|
|1906||The first conference on wireless telegraphy in Berlin adopts SOS as a warning signal.|
|1929||The Kingdom of Serbs, Croats and Slovenes officially changes its name to Yugoslavia.|
|1940||The U.S. Army adopts airborne, or parachute, soldiers. Airborne troops are later used in World War II for landing troops in combat and infiltrating agents into enemy territory.|
|1944||German troops evacuate Athens, Greece.|
|1952||The UK successfully develops a nuclear weapon, becoming the world’s third nuclear power.|
|1963||A violent coup in Honduras ends a period of political reform and ushers in two decades of military rule.|
|1985||The Space Shuttle Atlantis makes its maiden flight.|
|1990||After 40 years of division, East and West Germany are reunited as one nation.|
|1993||The Battle of Mogadishu takes place, in which 18 US soldiers and some 1,000 Somalis are killed during an attempt to capture officials of the warlord Mohamed Farrah Aidid’s organization.|
“Stopping people from bringing bed bugs home can be a big step in preventing them spreading throughout the world.”
Scientists already know that human odor attracts bed bugs, though not which chemicals in the odor specifically. But for the newest study, researchers prepared a mock bedroom with laundry bags containing clean and dirty clothes—in other words, there were no humans in the room. The critters were “twice as likely to aggregate on bags containing soiled clothes compared to bags containing clean clothes,” according to the paper published today in the journal Scientific Reports. Contrary to the researchers’ hypothesis, the amount of carbon dioxide in the room did not affect their results—the CO2 source would represent a human, since some bugs like mosquitoes are specifically attracted to the carbon dioxide you exhale.
These results were enough to convince the researchers that bed bugs could travel throughout the world by hitching a ride in luggage containing dirty clothes.
the authors “demonstrate a striking pattern that bags containing clothes with human odor were more frequently used as refuges than those without. This result emphases the importance of making sure luggage and other belongings are made as inaccessible to bed bugs as possible when staying in increased risk places, for example by making sure bags are fully closed and secured and kept away from the bed.” Hentley agreed with this advice.
Using a black marker, the researchers "erased" the spiders' bright yellow color. The spiders whose colors had been thus muted were on average less successful at catching prey. Like arrow-shaped micrathenas, the Australian spiders are "sit-and-wait" predators that ensnare prey in large webs.Maybe when insects see this, they don't think "Pikachu" as much as they think "flower." Read more about the PIkachu spider at National Geographic News.