Although assumed that reversals in the Earth’s magnetic field has little noticeable impact on the living organisms on this planet, the discovery of well-preserved trees dating from the last geomagnetic reversal 42,000 years ago suggest that such an event may cause major disruptions for both the climate, and the planet’s
After the recent Colorado massacre, we ALL want to reduce violence, but we’re divided about how to do it. Sociologists think that "greening" vacant lots may be associated with reductions in certain gun crimes (and it’s certainly easier than trying to get gun laws passed!)
Results of a recent study show that residents living near greened vacant lots feel safer than those near non-greened sites. Additionally, incidents of police-reported crimes may be reduced after greening.
Tree rings can tell you a lot: The Japanese have discovered that, in the late eighth century, the earth was hit by a mysterious blast of cosmic rays (NOTE: Subscribers can still listen to this show). They discovered this by looking at cedar trees.
An analysis of two ancient trees found a surge in carbon-14, an isotope that arrives from space, which was deposited in cedar tree rings only in 774 and 775 AD. What happened?
Plant trees! – One of the most important things we can do to save our cities from global warming in the future is to plant more trees now.
Researcher Brian Stone says, “Across the US as a whole, approximately 50% of the warming that has occurred since 1950 is due to land use changes (usually in the form of clearing forest for crops or cities) rather than to the emission of greenhouse gases. Most large US cities, including Atlanta, are warming at more than twice the rate of the planet as a whole, a rate that is mostly attributable to land use change. As a result, emissions reduction programs like the cap and trade program under consideration by the US Congress may not sufficiently slow climate change in large cities where most people live.”