Controversial science topics for essays

I believe in evolution not because I want to, but because I feel I must, and because, unlike Bryan, I find it hard to reason in one direction or another. Creationists have offered one objection after another — “The immune system is too complex to have evolved,” “Evolution could never produce an eye, because what use is half an eye?” — and each has been answered. As the confirming fossil and DNA evidence piles up, as the theory of evolution reveals itself to be a powerful tool for both explaining the imperfections of species and accounting for transitional species, it becomes ever more difficult to believe in the pleasing creation stories told in Genesis and elsewhere. Facts, as John Adams reminded us, are stubborn things. Whether 20 years or 200 years from now, the accumulating evidence will become so overwhelming that evolution will be as accepted as the Sun-centered solar system is today. (No gloating allowed, scientists.)

Dinosaurs' iron-rich blood, combined with a good environment for fossilization, may explain the amazing existence of soft tissue from the Cretaceous (a period that lasted from about million to million years ago) and even earlier. The specimens Schweitzer works with, including skin, show evidence of excellent preservation . The bones of these various specimens are articulated, not scattered, suggesting they were buried quickly. They're also buried in sandstone, which is porous and may wick away bacteria and reactive enzymes that would otherwise degrade the bone. 

“This is a robust study because patient were allocated to one of the two treatments at random ensuring that any difference seen in outcome between these treatments, is not due to pre-existing differences in the patients. The main limitation is that, as it is not possible to hide which treatment they received from the patients, their self-ratings of fatigue and functioning could potentially be biased by their views on the treatment they received. However, differences in the school attendance a year later were also noted; it seems likely that these could be due to such a bias.

The buzzword in farming these days is what’s known as “integrative pest management.” In IPM systems, conventional pesticides are used responsibly, and pest control relies heavily on natural predators. One potential strategy Pywell discussed is limiting exposure by supplying other flowers near fields that could also serve as a refuge for pest predators. Walton explained that they employ a similar strategy on his farm, planting wildflowers and other native plants in ditches and field margins. However, given the evidence that neonicotinoids are more mobile and persistent than previously imagined, it may be important to monitor whether flowers in refuges are picking up neonicotinoids.

Controversial science topics for essays

controversial science topics for essays

The buzzword in farming these days is what’s known as “integrative pest management.” In IPM systems, conventional pesticides are used responsibly, and pest control relies heavily on natural predators. One potential strategy Pywell discussed is limiting exposure by supplying other flowers near fields that could also serve as a refuge for pest predators. Walton explained that they employ a similar strategy on his farm, planting wildflowers and other native plants in ditches and field margins. However, given the evidence that neonicotinoids are more mobile and persistent than previously imagined, it may be important to monitor whether flowers in refuges are picking up neonicotinoids.

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