Quantcast

International News Archive - July 13, 2010

f7b1f2a1f29e791e57ca2e861a14b1e6

African national parks like Masai Mara and the Serengeti have seen populations of large mammals decline by up to 59 percent, according to a study published in Biological Conservation.

Word of the Day
tesla
  • The unit of magnetic flux density in the International System of Units, equal to the magnitude of the magnetic field vector necessary to produce a force of one newton on a charge of one coulomb moving perpendicular to the direction of the magnetic field vector with a velocity of one meter per second. It is equivalent to one weber per square meter.
This word is named for Nikola Tesla, the inventor, engineer, and futurist.