Scientific Discovery

Space Sailing - Electro-magnetic Propulsion and Electro-dynamic Braking In Space Applications

Space Sailing - Electro-magnetic Propulsion and Electro-dynamic Braking In Space Applications

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Space propulsion has changed little since mankind took its first tentative steps into space. Even with the incremental advances in the efficiency of chemical fuels; the basic nature of rocketry is still defined by the basic Delta V Rocket Equation with all its limitations; be it the powerful boosters used to obtain orbital velocity or the low impulse Ion Thrusters used to power deep space missions. This Neanderthal approach to propulsion limits both the potential flight parameters of deep space missions and the life span of earth orbiting satellites.

In earth orbiting satellites, the electronics of the satellite may last indefinitely; but the useable lifespan of that satellite is limited by the availability of on-board propellants used for orbital maintenance. Once the chemical propellant is exhausted, the satellite no longer has the capability of maintaining proper station.

Air pollution caused by coal promotes tuberculosis

Air pollution caused by coal promotes tuberculosis

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Montreal (Quebec), July 11th 2007 – A scientific study published in the July issue of the International Journal of Tuberculosis and Lung Disease sheds a new light on tuberculosis disease. Mounting epidemiological evidence demonstrates that air pollution is an important risk factor for tuberculosis. This is the first study to identify air pollution caused by coal as a key factor in the emergence of tuberculosis during industrialization.

By comparing historical statistics of energy and disease, the biochemist Guy A. Tremblay unraveled a systematic concordance linking residential and industrial uses of coal, and the prevalence of tuberculosis in a given society at different periods of its industrial development.

Environmental factors and industrialization
In the West, the Industrial Era coincided with an upsurge in tuberculosis. Nowadays, more than one-third of the global population harbors dormant tuberculosis bacteria, but only 10% of those infected with the germ go on to develop the disease. Environmental factors could explain these phenomena.

Live Earth Concerts adds Washington DC will cover Seven Continents this Saturday

Live Earth Concerts adds Washington DC will cover Seven Continents this Saturday

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[Best Syndication] Tomorrow is the big day July 7th, 2007, either people will be saying “I do” as record numbers of couples are getting married because of the lucky 777, or you might find yourself catching the Live Earth Concerts that are being held around the world that are to bring attention to global warming.

The last minute addition of Washington at the National Museum of the American Indian with country music stars Garth Brooks and Trisha Yearwood expected to perform. The museum was already planning a climate change concert by itself but joined efforts last minute with Live Earth.

Live Earth concerts that will also go on this Saturday will be in New York, Rio De Janeiro, London, Johannesburg, Hamburg, Shanghai, Tokyo, and Syndey.

Space Shuttle Lands In High Desert At Edwards Air Force Base

Sonic Boom Startles Southern California Residents As Shuttle Lands – Space Station Solar Panels Installed and Working

STS-117 Landing

(Best Syndication) The Space Shuttle Atlantis safely landed at California’s Edwards Air Force Base after a record-setting spaceflight by Mission Specialist Suni Williams. Suni broke the record for the longest spaceflight by a woman early in the morning on June 16. During her mission at the International Space Station she was in space for 194 days, 18 hours and 58 minutes.

Commander Rick Sturckow and Pilot Lee Archambault were at the controls when Atlantis landed at 3:49 p.m. EDT. The sonic boom startled many southern California residents. Some Californians thought an earthquake had occurred because it sounded like something had hit their homes.

Google shows off Hybrid Car that charges the Power Grid

Google shows off Hybrid Car that charges the Power Grid

Screenshot of Google.org website

[Best Syndication] Google has set up google.org to achieve a number of philanthropic goals, one which includes reducing CO2 emissions. This goal has prompted investments into research on ways to improve Hybrid car technology that will get better mileage and give back electricity to the power grid.

The modified Toyota Prius showed off by Google is said to have more that 70 mpg fuel efficiency. The standard Toyota Prius uses 45 mpg. The extra electricity stored in the battery can be plugged into the power grid when it is not being driven and given back to the power grid, which they are calling vehicle-to-grid (V2G). If enough vehicles with this techonology was able to give back to the power grid, there would be less need for coal power plants.

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