Life and styleThe night of the hunterIt began as a fun day out quad-biking in the Australian outback. But it ended in disaster - with one young man killed by a crocodile and his two friends perched all night in a tree while the predator circled belowIt's "the Wet" in Australia's Northern Territory, which means tropical cyclones, monsoon rains and stifling humidity. Out in the bush, 80km south-west of Darwin, heavy rainfall turns the red earth to mud and swells the Finniss river, partially submerging the trees along its banks and flooding the whole area.

SPECULATIVE SCIENCEWhat is the easiest way to accurately weigh your own head? I've tried both lying on the bathroom scales and water displacement, but cannot get a consistent result Sam, London You can do it approximately by the following method: if you assume that the average density of tissue and bone in your head is similar to that in the rest of your body (taken as a whole), then all you need to do is determine the volume of your head, the volume of the rest of your body, and then multiply the ratio of the two by your total body weight.

The ObserverScamsTravellers are getting seemingly convincing messages asking them to provide bank card details and threatening their reservation will be cancelled Travellers using the popular hotel website Booking.com are being warned not to fall for scam emails asking them to confirm their hotel payment, after a hack of Booking.com’s email system. In recent weeks the Observer has been contacted by a number of customers claiming that they had received scam emails from within the Booking.

Bees This article is more than 2 years oldBrighton bee bricks initiative may do more harm than good, say scientistsThis article is more than 2 years oldSpecial bricks could attract mites or encourage spread of disease if not cleaned properly, say some experts An initiative in Brighton aimed at helping protect the bee population could do more harm than good, scientists have warned. The council in Brighton has passed a planning condition that means any new building more than five metres high will have to include swift boxes and special bricks with holes known as bee bricks.

OpinionInternet This article is more than 5 years oldBrowsing porn in incognito mode isn't nearly as private as you thinkThis article is more than 5 years oldDylan CurranWhen you use incognito mode, it doesn’t mean that your activity disappears forever – it’s just hidden on the incriminating device Ctrl-shift-N: the wondrous keyboard shortcut to start an incognito tab in Google Chrome. You hesitantly type in your odious search, and find the porn site which in that moment you feel a magnetizing attraction to.