Both devices are tasked with sending location information to a smartphone app, but BluTracker adds GPS and a whole lot of power, offering a range of 2, 500 feet or more outdoors, or a few hundred feet if you end up with some walls in between you and the compact rechargeable device.

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The toxic soup springing up from under our feet could happen with any step you take.

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If some wind shear would cross with another section a few hundred, or a thousand feet above it, you can end up in a condition where it'll actually cut like a knife, and slice the top of the balloon right off.

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With a partner and gear, you can probably climb an average pitch (usually up to 200 feet) in about half an hour.

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With a Parajet on your back, you can fly up to 2, 500 meters (8, 000 feet), traveling a distance of 160km (100 miles) at a speed of up to 75kph (46mph).

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