Scientists estimate that one fifth of the world's tropical rainforest was destroyed between 1960 and 1990.

Scientists estimate that more than half of all the world's plant and animal species live in tropical rain forests.

Scientists estimate that the mountains surrounding the canyon rose at a rate of approximately one foot every 2500 years.

* Scientists estimate that it will take until the 29th century for radiation levels in areas directly contaminated by the Chernobyl disaster of 1986 to become safe for permanent human habitation again.

Scientists estimate the area's recovery time may be as long as a century.

Scientists estimate that there may be as many as 10, 000 different phytochemicals having the potential to affect diseases such as cancer, stroke or metabolic syndrome.

A detailed analysis by physicists at the Federation of American Scientists concludes that such an estimate would depend on the total number and overall efficiency of the centrifuges Iran has in operation, and the amount of low-enriched uranium it has stockpiled to serve as " feedstock " for a possible high-enrichment program.

Scientists estimate that there may be more than 100, 000 sites spread over 50, 000 km² of the Kimberley.

Scientists estimate that the system of roads in the United States impacts the ecology of at least one-fifth of the land area of the country.

Scientists estimate that there are only 80-100 Florida panthers alive in the wild, making them one of the most endangered large mammals in North America ( Foster and Humphrey, 1995 ).

Scientists estimate that trawling has damaged or destroyed 30 %– 50 % of the Norwegian shelf coral area.

Scientists estimate the host plants for this sharpshooter include over 70 different plant species.

Scientists estimate only 1 of 100 turtles live to become an adult.

Scientists estimate that the Mississippi River Delta loses a football field of land an hour -- over 1, 900 square miles since the 1930s, roughly the size of Delaware.

Scientists estimate the island's native vascular plants to be between 25 and 30 species, 10 of them endemic to Ascension ( Ashmole 2000, Gray et al.

Scientists were able to mimic this ocular response using glasses, and speculate that a similar pair of glasses may be available for human use within two years.

Thomas Hardy, who built his house within sight of it, described the castle in a short story, " Ancient Earthworks and What Two Enthusiastic Scientists Found Therein " ( 1885 ) about a local antiquarian who spent much time investigating the site.

FAS was originally founded as the Federation of Atomic Scientists on November 30, 1945 by a group of scientists and engineers within the Associations of Manhattan Project Scientists, Oak Ridge Scientists, and Los Alamos Scientists.

Scientists believe that they are self-sufficient within 20 days.

Scientists within the Islamic civilization were of diverse ethnicities.

Scientists who are involved in their own scientific projects draw about 30 percent of third-party funds within the University.

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Thus, Usmani laid solid groundwork for the civilian nuclear programme Scientists and engineers under Munir Ahmad Khan developed the nuclear capability for Pakistan within early 1980s, and under his leadership the PAEC had carried a cold test of nuclear device at Kirana Hills, evidently made from non-weaponized plutonium.

Scientists from the Naval Research Laboratory at Stennis Space Center, Mississippi have used a computer model to predict that, at the height of the storm, the maximum wave height within Ivan's eyewall reached 131 feet ( 40 m ).

Note: this category is for types of occupations within or relating to the sciences ; it is not meant for the various fields and sub-fields of science, which are grouped under: Category: Scientists.

" Scientists working within these forests south of the Uele, however, have found no such evidence, nor heard any such reports from local communities.

Scientists at NASA contact the bunker to say that they have discovered a video / audio message within the energy beam, and relays the message to the bunker.

Information provided by the Intelligence Resource Program of the Federation of American Scientists based on the 2003 Patterns of Global Terrorism report suggests that the organisation has several dozen operatives within Turkey and a large support network in Europe.

Once the Atomic Energy Act of 1946 became law, the Bulletin of the Atomic Scientists released an analysis revealing the propositions contained within the scope of the legislation on September 1, 1946.

Scientists Kensaku Isami and Midori Isami work within Orphan in order to uncover its vast knowledge, reach the Earth's surface with the craft, and travel the galaxy, resulting in the annihilation of all lifeforms on Earth.

* Stephen Henry Schneider ( 2004 ), Scientists debate gaia: the next century

“ Scientists from the General Electric Co. could have winked to their audience and said, ‘ You ain't seen nothing yet .’ The smart guys who developed amplifiers, transmitters and bright lights were working on that next step — sound and pictures.

Scientists currently know the functions of only a few genes.

Scientists long suspected community fireworks displays were another source, but few studies had been done on the topic.

Scientists theorized that silicon would be easier to fabricate, but few investigated this possibility.

Scientists long suspected community fireworks displays were another source, but few studies had been done on the topic.

Scientists would survey the entire field, make lots of unsuccessful hauls, and conclude that it contains few fish.

The Surrealists did a few songs by the Scientists ( particularly " Shine " from The Human Jukebox ) and had a similar sound, in that Salmon remained the leader and primary songwriter, but the feel of the music was notably different: far less tense and confrontative.

Scientists wouldn't have been surprised to see a few positrons accompanying any intense gamma ray burst, but the lightning flash detected by Fermi appeared to have produced about 100 trillion positrons.

Scientists concluded after the tests were completed that a large release of anthrax spores would thoroughly pollute German cities, rendering them uninhabitable for decades afterwards.

Scientists studying how animals evolve use many animal species to see how variations in where and how an organism lives ( their niche ) produce adaptations in their physiology and morphology.

Scientists generally recognize that folk taxonomies conflict at times with Linnaean taxonomy or current interpretations of evolutionary relationships, and can tend to refer to generalized rather than quantitatively informative traits in an organism.