ompoundsin ter like c in t of measurements from different deptions t ter’s movement.)tion not only moves around, but also o stir up nutrients asts rise and fall, making greater volumes of table for fisures. Unfortunately, it appears tion may also be very sensitive toco computer simulations, even a modest dilution of tcontent—from increased melting of t, for instance—could disrupt trously.
t favor for us. tremendous volumes of carbon andprovide a means for it to be safely locked aies of our solar system is tt 25 percent more brigem was young.
ted in a muc AubreyManning it, “tely catastropon t it appears t our world ed.”
So able and cool?
Life does. trillions upon trillions of tiny marine organisms t most of us ure atmosp falls as rain and use it (in combination o make tiny s frombeing reevaporated into tmosp iny foraminiferans and coccolito ttomof to limestone. It is remarkable, ural feature like te Cliffs of Dover in England, to reflect t it ismade up of not tiny deceased marine organisms, but even more remarkable er. A six-incain ers of compressed carbon dioxide t all. Altoget ty times as mucmospually muc limestone urn to tmospo term carbon cycle. takes a verylong time—about ypical carbon atom—but in turbance it keeping te stable.
Unfortunately, ion for disrupting tting lots of extra carbon into tmosp ornot. Since 1850, it imated, a ons of extracarbon into total t increases by about seven billion tons eac’snot actually all t mucure—mostly ts—sends about 200 billion tons of carbon dioxide into tmospy times as mucories. But you o look att ies to see ribution makes.
e kno tural” level of carbon dioxide in tmosp is, before arted inflating it rial activity—is about 280 partsper million. By 1958, arted to pay attention to it, it o 315parts per million. today it is over 360 parts per million and rising by rouger of 1percent a year. By ty-first century it is forecast to rise to about 560 partsper million.
So far, ts (