How many emails are in your inbox? If the answer is thousands, or if you often struggle to find a file on your computer among its cluttered hard drive, then you might be classed as a digital hoarder.

In the physical world, hoarding disorder has been recognized as a distinct psychiatric condition among people who accumulate excessive amounts of objects to the point that it prevents them living a normal life. Now, research has begun to recognize that hoarding can be a problem in the digital world, too.

It has been clear for a while that, at least in the U.S., the only way out of the coronavirus pandemic will be through vaccination. The rapid deployment of coronavirus vaccines is underway, but how many people need to be vaccinated in order to control this pandemic?

I am a computational biologist who uses data and computer models to answer biological question at the University of Connecticut. I have been tracking my state’s COVID-19 epidemic with a computer model to help forecast the number of hospitalizations at the University of Connecticut’s John Dempsey Hospital.

Can Christmas be about gender? Apparently so, if the paucity of female Santas is anything to go by. There have, in fact, been cases of Australian women donning the secular red and white Santa attire as far back as 1930 — and there is no reason why we couldn’t have more female Santas today.

In 1935, Queensland’s Daily Mercury reported on aviator Nancy Bird Walton, “The Angel of the Outback”, piloting a female Santa Claus into the north-western corner of New South Wales.

If intelligent aliens visit the Earth, it would be one of the most profound events in human history.

Surveys show that nearly half of Americans believe that aliens have visited the Earth, either in the ancient past or recently. That percentage has been increasing. Belief in alien visitation is greater than belief that Bigfoot is a real creature, but less than belief that places can be haunted by spirits.

In our daily life, we unfortunately have become used to seeing images of tumors and melanomas. You may have noticed that they’re are not entirely symmetric. This asymmetry is useful to doctors in their diagnoses, but why are they asymmetric?

The three recent appearances (and two subsequent removals) of “monoliths” in Romania, Utah and California are intriguing examples of what can capture the public’s imagination.

These constructions are metallic-looking structures about three or four metres tall, with a simple geometric design and reflective surface.