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Edition Neil
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David Shepherd, conservationist and artist
David Shepherd, internationally renowned wildlife artist and conservationist, who has devoted much of his time to protecting almost extinct species of animals, and bringing to the forefront, the ever increasing need to 'look after' the planet on which we all live... He has recently presented awards to the Wildlife artist of thee year... He expressed his pride of the sucess of this year's competition, and went on to say how rewarding it was to offer an opportunity to so many artists throughout the world so that they can display their work and raise money to help save so many endangered species and make people aware of exactly what is happening to the world and its creatures. He expresses his views in a most straightforward and 'down-to-earth' manner... In a recent talk David believes that the world is dangerously fragile, and mainly through arrogance man thinks it fine to destroy and use up non-renewable resources for our own benefit. Mankind seems to be of the oppinion that it owns the Earth, but of course we share its ocupation with all the other living animals. The most dangerous animal on the planet is Man, and we make extinct one species every hour!It is unbelievable that we think that we can continue like this.... Resources are limited and time is limited..!.
His knowledge about wildlife is relatively small, but that is of little importance, but that is of little importance. He is acutely and strongly aware that his sucess is mainly due to the animals he has painted. He has seen many awful results of man's gread and stupidity towards the animals that live on the planet. Directors of many of the major corporations seem to have no interest in anything else apart from the interests of their shareholders. In politics who really cares about the environment? Greed and ignorance are the main factors..! Nothing is happening to right these issues, there was a glimmer of hope many years ago when 150 countries met to discuss the issue, but to no avail.. The world is crying out for help but those cries seem to be unheard.
Man's infinite wisdom and creative ability can always write another symphony or build another beautiful building. However, once the last tiger has been killed, another one cannot be made. Neil Armstrong tells David a thought as he was coming back from the moon in the space ship. He looked through the window at Earth, and it seemed about the size of a small ball; at that moment he realised how fragile it was. It was so fragile and it is our only planet and the message must arrive today; Otherwise, tomorrow will not exist.
About the Author
David Tatham has been an art dealer for over 25years. He specializes in original paintings and signed limited edition prints by the renowned British artist David Shepherd. The largest collection of his work in the country can be viewed and purchased from http://www.davidshepherd.com
Biology by Neil Campbell 6th edition-evolution connection?
Ch. 3
why has there been so much interset in the presence of water on Mars?
Would the presence of water make it more likely that life had evolved there?
what other physical factors might also be important?
Water on Mars is an expression for all the water present on the planet Mars. In comparison to Earth, water is much less abundant on Mars in all three states of matter. Most of the water is locked in the cryosphere (permafrost and polar caps), so there are no bodies of liquid water, which could create a hydrosphere. Only a small amount of water vapour is in the atmosphere.
Current conditions on the planet surface do not support the long-term existence of liquid water. The average pressure and temperature are far too low, leading to immediate freezing and resulting sublimation. Despite this, research suggests that in the past there was liquid water flowing on the surface.creating large areas similar to Earth's oceans. The question of today is, where has all this water gone.
There are a number of direct and indirect proofs of water's presence either on or under the surface, e.g. stream beds, polar caps, spectroscopic measurement, eroded craters or minerals directly connected to the existence of liquid water (such as Goethite. Reserves of water on Mars may dramatically lower the need of water supplies for any human exploration of Mars.[citation needed] In an article in the Journal of Geophysical Research, scientists studied Lake Vostok in Antarctica and discovered that it may have implications for liquid water still being on Mars. Through their research, scientists came to the conclusion that if Lake Vostok existed before the perennial glaciation began, that it is likely that the lake didn't freeze all the way to the bottom. Due to this hypothesis, scientists say that if water had existed before the polar ice caps on Mars, it is likely that there is still liquid water below the ice caps that may even contain evidence of life.
Scientists have long speculated about the possibility of life on Mars owing to the planet's proximity and similarity to Earth. Although fictional Martians have been a recurring feature of popular entertainment, it remains an open question whether life currently exists on Mars, or has existed there in the past.
Mars' polar ice caps were observed as early as the mid-17th century, and they were first proven to grow and shrink alternately, in the summer and winter of each hemisphere, by William Herschel in the latter part of the 18th century. By the mid-19th century, astronomers knew that Mars had certain other similarities to Earth, for example that the length of a day on Mars was almost the same as a day on Earth. They also knew that its axial tilt was similar to Earth's, which meant it experienced seasons just as Earth does - but of nearly double the length owing to its much longer year. These observations led to the increase in speculation that the darker albedo features were water, and brighter ones were land. It was therefore natural to suppose that Mars may be inhabited by some form of life.
Mars is currently host to three functional orbiting spacecraft: Mars Odyssey, Mars Express, and the Mars Reconnaissance Orbiter. With the exception of Earth, this is more than any planet in the Solar System. The surface is also home to the two Mars Exploration Rovers (Spirit and Opportunity) and several inert landers and rovers, both successful and unsuccessful. The Phoenix lander recently completed its mission on the surface. Geological evidence gathered by these and preceding missions suggests that Mars previously had large-scale water coverage, while observations also indicate that small geyser-like water flows have occurred during the past decade.Observations by NASA's Mars Global Surveyor show evidence that parts of the southern polar ice cap have been receding.
Mars has two moons, Phobos and Deimos, which are small and irregularly shaped. These may be captured asteroids, similar to 5261 Eureka, a Martian Trojan asteroid. Mars can be seen from Earth with the naked eye. Its apparent magnitude reaches −2.9,a brightness surpassed only by Venus, the Moon, and the Sun, although most of the time Jupiter will appear brighter to the naked eye than Mars. Mars has an average opposition distance of 78 million km but can come as close as 55.7 million km during a close approach, such as occurred in 2003.
Terrific Twitterers: Academy Awards Edition!
Lots of people tweet -- but all that Twitters is not gold. That's why you'll want to check out SPIN.com every Friday to see whose tweets we're reading this week -- then update your TweetDeck! (Obligatory Self-Promotion: …while you're at it, be sure to follow @SPINmagazine !) This week's winners are headed to the Academy Awards next Sunday, March 7. Check them out as they tweet their way through ...
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