Connected

While surveillance technology raises real privacy concerns, some of it is being used in positive ways, especially when it comes to our animal friends.

A speck of dust seems insignificant, but a swarm of it can do everything from generating oxygen to tempering hurricanes to fertilizing the rainforest.

A 19th-century shipwreck led to weather forecasting as we know it, and laid the groundwork for other predictive models as well as ... well, the cloud.