I photographed several images looking from the Sandbanks peninsular towards Hengistbury Head and beyond with the attached images being the result.  The building do not appear to be anywhere within several miles of the headland in the picture and the distorted rock strata suggest the are a mirage.  What conditions lead to this effect and over what sort of distances can an image be seen?  The additional photos of boats show an inverted and a correct way up image above the sea surface - Is this the resut of the same conditions ?

History has shown that the Earth's magnetic poles have switched over past history.  How would a modern switch affect such technology as electrical generation, electric motors, and all things magnetic including Compasses and GPS.

Probably is a blind shot, but I would like to ask if somebody has calculated the impact in global warming of the direct heat. I am thinking for example in the human population (almost 7 billion with a constant  average temperature of 36.5 º C). And not only that, but the average temperature of all the cattle in the world kept by humans, (billions of animals that otherwise wouldn´t exist). Also we could think in the heat from fires (both wildfires and the small ones) and the heat that escapes from our homes, vehicules or industries.

 it's very strange.......

Alright, another strange Jellyfish question. This occurred in Viareggio, again in Italy, durring the early summer of last year. I was swimming in the sea, in which at first I did not see a single jellyfish, when all at once I was swimming in what was something like two parts jellyfish to one part water, if you get my drift. I know that now sudden blooms of medusae in the Mediterranean have been becoming common, but here's where it gets a little weird: every last one of them were dead, and their tentacles missing. What could have caused this? At first the only explaination I could think up was that perhaps they die after breeding, and that their tentacles had been chewed off. Which, nonetheless, makes little sense to me. And seeing that a creature whose body is 97% water decays quite rapidly as it is, I wouldn't think that their tentacles just happened to rot away first. I supposed it's worth noting that, although varying in size, all of the dead jellyfish were of the same species. All other types of jellyfish I saw that day in the area were alive and intact. Any ideas?

I was in Isola d'Elba, an island off the coast of Tuscany, early last spring durring an enormous jellyfish bloom. At about mid-afternoon, before which the waters had been essentially clear of jellyfish, the area became completely swarmed all in about a period of twenty minutes. It consisted almost entirely of one species, which were obviously a type of comb jelly but whose description does not match anything I have been able to find on the net. They looked like Mnemiopsis, but were pinkish-orange in color (and relatively opaque), about twenty centimeters in length, and were covered in conicle, spike-like protrusions.

Among these were also a few individuals of a couple other species I have not been able to find information on. These include a type that was the exact size, color, and shape of a chicken egg, and another which was flat and resembled an elongated, outstretched pair of wings with a span of about 160 cm.

All of the species I have listed above were bioluminescent, emerged at the same time, dissolved easily to the touch, and did not sting (these being traits of jellyfish that live in the abyss, which therefore should not have been in shallow water to begin with). Unfortunately, I did not have a camera at the time and thusly can only describe them as best I can, but any information you might have on them would surely put my curiosity at ease.

Tsunamis move fast, and tow-in surfers use various vehicles to catch large waves. A friend has a son who wants to ride a 100-foot wave. Is this possible? How big of a wave could an unassisted surfer catch?

Everyone has died so far, but people wonder if things are speeded up unnecessarily. Some claim that isolated Eskimos a century ago had "perfect" hearing at age sixty, but the introduction of snowmobiles and rifles led to most being deaf by the same age a generation or two later.

How does exposure to sunlight (with and without sunglasses) affect vision? How do other animals fare?