4/30/2004:

Intermediate Word:  consonance  (a) similar-sounding  (b) in accordance with  (c) onomatopoeia  (d) dubbing in sounds
Difficult Word: - dromedary  (a) type of date  (b) Arabic bazaar  (c) double-humped camel  (d) single-humped camel


Aerospike Engine Flight Test Successful - SpaceDaily  The effort, called the Dryden Aerospike Rocket Test, yielded big returns, providing the first known data from a solid-fueled aerospike rocket in flight. Two 10-ft. Long solid-fueled rockets with aerospike nozzles were flown successfully on two consecutive flights. The main advantage of aerospike nozzles is that, as the rocket climbs, atmospheric and airstream pressure act on the plume to keep it at an optimum setting along the entire trajectory. This allows very efficient engine performance in flight. With traditional rocket engines, the bell nozzle is most efficient at only one point in the rocket's trajectory.
Mice created without fathers  - BBC  Scientists have created two female mice without fertilising the eggs they grew from, the journal Nature says. The eggs had two sets of chromosomes from two female mice, rather than one from the mother and one from the father as in a normally fertilised embryo. The phenomenon, called parthenogenesis, never occurs naturally in mammals. Some researchers say the procedures may be applied to stem cell research, but the scientists who carried out the work say it would not yet work in humans. "And I don't want to do it," said Dr Kono.

Black planet: How much oil is left under the surface of the Earth?  - BBC  Left:  The oil is there, but can we access it all?  Just how much oil is left under the surface of Planet Earth? Loads - or more than 1,000bn gallons of proven (we know for sure) reserves to be precise, up to 40 years' worth. Add that still yet to be discovered, and the figure and timescale is much higher still. Mr Hayes added that while oil supplies would eventually dry up, that point could be a century away. "Yet as it becomes more scarce, prices will no doubt go up, and there will inevitably have to be a gradual move to alternative power sources."





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