( ses'' he said. ''Already in Malaysia ...)Custom-made cancer cell attacks

ses,'' he said. ''Already in Malaysia, Indonesia, the Philippines, the acreage of palm oil is extending very rapidly because palm oil can be converted to biodiesel with a quite high efficiency and very low capital investment. But is it worse for the environment than climate change? That's the question.''

According to Somerville, ''Climate change threatens biodiversity more than anything that I know. For example, in British Columbia they are losing each year forests the size of Rhode Island because of beetle infestation, because it is not cold enough in the winter to kill the beetles, and they are killing the forest.''

Achievable goals

The president's target of 35 billion gallons of alternative fuels by 2017 ''is very substantive, but Bush did not provide any insights into what he is going to do to make that happen,'' Somerville said, adding that it will take seven to 10 years to produce cellulosic ethanol at competitive prices.

''It is certainly possible to achieve Bush's goals technically,'' he said. ''The question in my mind is whether investors are ready to put up the money required to make it happen.''
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