Earth's Population Problem
By all officials estimates, the Earth's population is scheduled to grow rapidly during the coming decades, but this long-term problem ill-suits short term political careers, says The Independent.
By all officials estimates, the Earth's population is scheduled to grow rapidly during the coming decades, but this long-term problem ill-suits short term political careers, says The Independent. "You can of course imagine the political class arguing that scientists have consistently got it wrong about overpopulation. But the next 40 years are going to be very different to the previous 40 years, and many scientists fear that there will indeed be extreme misery to come if the world does not take population more seriously...World food production will have to increase by 50 per cent to meet rising demand; water availability will have to increase by 30 per cent; and global energy demands by 50 per cent. Politicians may think that science and technology will provide what is needed, as it has done in the past at a cost to the environment, but many scientists are not so sure."
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It's one factor that can help explain the religiosity gap.
- Sociologists have long observed a gap between the religiosity of men and women.
- A recent study used data from several national surveys to compare religiosity, risk-taking preferences and demographic information among more than 20,000 American adolescents.
- The results suggest that risk-taking preferences might partly explain the gender differences in religiosity.
She met mere mortals with and without the Vatican's approval.
- For centuries, the Virgin Mary has appeared to the faithful, requesting devotion and promising comfort.
- These maps show the geography of Marian apparitions – the handful approved by the Vatican, and many others.
- Historically, Europe is where most apparitions have been reported, but the U.S. is pretty fertile ground too.
A NASA astronomer explains how astronauts dispose of their, uh, dark matter.
- When nature calls in micro-gravity, astronauts must answer. Space agencies have developed suction-based toilets – with a camera built in to ensure all the waste is contained before "flushing".
- Yes, there have been floaters in space. The early days of space exploration were a learning curve!
- Amazingly, you don't need gravity to digest food. Peristalsis, the process by which your throat and intestines squeeze themselves, actually moves food and water through your digestive system without gravity at all.
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