Scientists who have long wondered why the polarity of the Earth's magnetic field occasionally reverses may finally have their answer. Also, a look at how the online industry is stepping up its measures to thwart electronic junk mail, a new way of approaching long-term problems that focuses on flexibility rather than cost-benefit analysis; and surprising similarities between humans and animals when it comes to dealing with personal economics.More
We've sent an email with your order details. Order ID #:
To access this title, visit your library in the app or on the desktop website.
Love the content, do not like the narrator