From bald Britney to Paris in chains, a look back at the showbiz stories that made the news in 2007.

There was a stage event involved either A) Boy in his underwear or B) Bald man jumping on an Xbox 360 and calling it "junk." Don't you just love it when Germans jump on stuff? What's more, at an electronics chain called Saturn, customers could climb a wall and chuck their own Xbox 360 down, destroying it. 50 people could get free PS3s by doing so.

Biomagnification, also known as bioamplification, or biological magnification is the increase in concentration of a substance, such as the pesticide DDT, that occurs in a food chain as a consequence of:Food chain energeticsLow (or nonexistent) rate of excretion/degradation of the substance.Although sometimes used interchangeably with 'bioaccumulation,' an important distinction is drawn between the two.Bioaccumulation occurs within a trophic level, and is the increase in concentration of a substance in an individuals' tissues due to uptake from food and sediments in an aquatic milieu.Bioconcentration is defined as occurring when uptake from the water is greater than excretion.Thus bioconcentration and bioaccumulation occur within an organism, and biomagnification occurs across trophic (food chain) levels.Lipid soluble (lipophilic) substances cannot be excreted in urine, a water-based medium, and so accumulate in fatty tissues of an organism if the organism lacks enzymes to degrade them. When eaten by another organism, fats are absorbed in the gut, carrying the substance, which then accumulates in the fats of the predator. Since at each level of the food chain there is a lot of energy loss, a predator must consume many prey, including all of their lipophilic substances.For example, though mercury is only present in small amounts in seawater, it is absorbed by algae (generally as methylmercury). It is efficiently absorbed, but only very slowly excreted by organisms. Bioaccumulation and biomagnification result in buildup in the adipose tissue of successive trophic levels: zooplankton, small nekton, larger fish etc. Anything which eats these fish also consumes the higher level of mercury the fish have accumulated. This process explains why predatory fish such as swordfish and sharks or birds like osprey and eagles have higher concentrations of mercury in their tissue than could be accounted for by direct exposure alone. For example, herring contains mercury at approximately 0.01 ppm and shark contains mercury at greater than 1 ppm.