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  • 26 Apr 2000

    Chemists have found a safe substitute for the brilliant yellow and red cadmium-based pigments used to tint glass and ceramic glazes. The new pigments contain no heavy metals, but are vivid and durable, scientists report in the 27 April issue of Nature.

  • 21 Apr 2000

    Scientists have discovered a new way to spot solar flares erupting on the far side of the sun. The technique, reported in the 1 May Geophysical Research Letters, might one day forecast the storms of particles that occasionally disrupt Earth's satellites.

  • 12 Apr 2000

    If scientists could easily manipulate single atoms, they might one day be able to build drugs and other molecules with unprecedented precision. It might even be possible to design computer disk drives that store vast amounts of data by moving atoms one by one.

  • 5 Apr 2000

    Four years ago, the spacecraft Ulysses hit a strange smooth patch in its bumpy ride through the solar wind. At the same time, its detectors were suddenly peppered with an unexpected spray of ionized particles, like the windshield of a car speeding through a swarm of bugs.

  • 22 Mar 2000

    The meteorite that some suspect doomed the dinosaurs also carried with it extraterrestrial gases trapped in tiny carbon cages called buckyballs, scientists report in the 28 March Proceedings of the National Academy of Sciences.

  • 17 Mar 2000

    HOUSTON, TEXAS--On 18 January, a 50-ton meteorite blazed across the early dawn sky above the southern Yukon. It was the size of city bus.

  • 8 Mar 2000

    In Geoffrey Chaucer's 14th century story "The Franklin's Tale," the faithfully married Dorigen tells an adulterous young squire that she will surrender her favors, but only if he can guarantee her husband's safe return from sea by submerging the coastal rocks of Brittany.

  • 3 Feb 2000

    "The top of a hill is not until the bottom is below," wrote the poet John Ciardi. "And you have to stop when you reach the top for there's no more UP to go." Fair enough, but how do you tell how high a mountain used to be, before wind and rain whittled it down?

  • 21 Jan 2000

    The speakers and microphones in modern telephones depend on tiny crystals that change electricity into sound and vice-versa.

  • 13 Jan 2000

    Scientists have long believed that solid plutonium dioxide (PuO2), a compound used in nuclear reactors and warheads, is the most stable form of plutonium.