 Toxoplasma gondii may be the most prevalent human parasite. As many as 50% of humans worldwide, and up to 80% in urban areas, have been infected with it at some time in their lives. An estimated 60 million people in the US have active cases at any given time. It’s a single celled parasite whose favored host is cats. However it can infect and live in a host of other creatures including rats and humans. Most infected people, and most infected rats, show no particular signs of illness when infected. They continue on with their daily life and work completely unaware they’ve been parasitized. But they may not be as unaffected as they seem.
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Even though the Aeroscraft dwarfs the largest commercial airliners, it requires less net space on the ground than any plane because it doesn’t need a runway. The airship takes off and lands like a helicopter: straight up and down.
A defense company based in Tuscon, Arizona has developed a working (reportedly) ray guy. As you can see in the image, the laser gun looks like the little carts they use to tow large aircraft onto the runway.