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Why is public WI-FI more risky

Public WI-Fi hotspots, such as those offered by cafes and hotels, don't require any authentication when you connect to them. This makes it relatively easy for anyone with the right technological know-how to access the data stored on your connected device.


For example, they could intercept the connection and gain access to anything you send via the internet, including emails and money transaction, or they could use the network to plant infected software, called malware, onto your device.

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Does more body fat make you more cold resistant?

Body fat is a good insulating material because it's a poor conductor of heat. This means that warmth generated in the body will be lost to the outside environment more slowly in people with higher body fat. However, people with high body fat may sometimes fell colder than individuals with lower body fat, as their skin receives less heat from their core.


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Testing the "Fat Man" bomb

In this historic photo, bomb assembly group leader Norris Bradbury stands next to the "Gadget". This nuclear bomb was detonated on 16 July 1945 at the Trinity test site in New Mexico, as a trial for the "Fat Man" bomb that would be dropped on the Japanese city of Nagasaki on 9 August 1945.

Gadget's explosion at 5.30 am was felt 160 kilometres away and sent a mushroom cloud billowing over 12 kilometres high. Because of the secrecy surrounding the US atomic bomb project a cover story was issued, telling the press that an ammunition store had exploded.





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The face of a tiny monster

This is the head of a pork  tapeworm (Taenia solium), a human parasite that can be transmitted through eating pork that hasn't been cooked properly, or by drinking contaminated water. The adult worm develops form a larva and can live in small intestine, growing up to three metres in lenght.

This image was taken with a confocal laser microscope. It shows the tapeworm,s two suckers (which look like eyes) and its hook-filled rostellum.




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