Living things vary tremendously in their characteristic body size. The range of mass spans more than 21 orders of magnitude, from the smallest known organisms (myco-plasm) at ^10~13g to the largest (blue whale) at 10 g (180-200 t). Even insects, a group typically thought of as relatively diminutive, have body sizes ranging over more than three orders of magnitude (Table 1). This includes feather-winged beetles, which readily could move through the eye of a needle, and the Goliath beetle from Africa, which is bigger than a typical dinner plate. The body mass span is extended considerably if one considers extinct insect species such as Meganeura with wingspans of ^70 cm. For centuries, biologists have been interested in what underlies this incredible diversity; why organisms evolve a certain size; and what the ecological and evolutionary consequences and tradeoffs are of each.

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10 Ways To Fight Off Cancer

10 Ways To Fight Off Cancer

Learning About 10 Ways Fight Off Cancer Can Have Amazing Benefits For Your Life The Best Tips On How To Keep This Killer At Bay Discovering that you or a loved one has cancer can be utterly terrifying. All the same, once you comprehend the causes of cancer and learn how to reverse those causes, you or your loved one may have more than a fighting chance of beating out cancer.

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