(Encyclopedia) umbrella, a small canopy used as a protection against the sun in China, Egypt, and elsewhere in remote antiquity. It was often an emblem of rank. During the Middle Ages the umbrella…
(Encyclopedia) tarsiertarsiertärˈsēər [key], small, nocturnal, forest-dwelling prosimian primate, genus Tarsius. There are at least three species found in the Philippines, in Sumatra and Borneo, and…
(Encyclopedia) spring, in mechanics, any of several elastic devices used variously to store and to furnish energy, to absorb shock, to sustain the pressure between contacting surfaces, and to resist…
Running style of an ostrichHow a Tyrannosaurus stood upNo-one has ever seen a dinosaur in action. However, the bones and the joints of fossilized skeletons can give us clues as to how the animals…
DIESEL TANKER TRUCKELECTRIC CARSFIND OUT MOREVehicles use engines of different kinds to move people and cargo from place to place. Most cars and motorbikes have petrol engines, but vans and…
Baseball, football, and basketball may be our favorite games, but in other countries, different sports are just as popular. Here are a few of them. Cricket…
The Birth of a DiseaseHIV/AIDSIntroductionThe Birth of a DiseaseFrom Epidemic to PandemicWhere Did HIV Come From?Diagnosis & Anti-HIV TherapyVaccination & Natural ResistanceLessons Learned…
It's Not the Heat, It's the HumidityWeatherMeasuring the AtmosphereThe Take on TemperatureIs the Pressure Getting to You?The Wind in the WillowsIt's Not the Heat, It's the HumidityMeasuring the…
