URL to an interesting article in Science Daily News
I hope that when the aliens arrive they land in Professor Andrew Watson's
First few paragraphs
"ScienceDaily (Apr. 19, 2008) — Is there anybody out there? Probably not,
according to a scientist from the University of East Anglia. A mathematical
model produced by Prof Andrew Watson suggests that the odds of finding new life
on other Earth-like planets are low, given the time it has taken for beings
such as humans to evolve and the remaining life span of Earth.
Structurally complex and intelligent life evolved late on Earth and it has
already been suggested that this process might be governed by a small number
of very difficult evolutionary steps.
Prof Watson, from the School of Environmental Sciences, takes this idea
further by looking at the probability of each of these critical steps occurring
in relation to the life span of Earth, giving an improved mathematical model
for the evolution of intelligent life.
According to Prof Watson a limit to evolution is the habitability of Earth,
and any other Earth-like planets, which will end as the sun brightens. Solar
models predict that the brightness of the sun is increasing, while temperature
models suggest that because of this the future life span of Earth will be ‘
only’ about another billion years, a short time compared to the four billion
years since life first appeared on the planet.
“The Earth’s biosphere is now in its old age and this has implications for
our understanding of the likelihood of complex life and intelligence arising
on any given planet,” said Prof Watson."
(no electrons were injured sending this message, tho billions were horribly
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