Conspiracy theories have a long history, but the actual term “conspiracy theory” emerged much more recently. It was only a few decades ago that the term took on the derogatory connotations it has today, where to call someone a conspiracy theorist functions as an insult.

So it may come as no surprise that there is even a conspiracy theory about the origins of the label. This conspiracy theory claims that the CIA invented the term in 1967 to disqualify those who questioned the official version of John F Kennedy’s assassination and doubted that his killer, Lee Harvey Oswald, had acted alone.

On October 3 1849, the famed American horror and mystery author Edgar Allan Poe was found in a complete state of delirium – incoherent, dishevelled and wearing a stranger’s clothes. Four days later, he died in a hospital. His final words were “Lord, help my poor soul”.

In an age of deepfakes and alternative facts, it can be tricky getting at the truth. But persuading others – or even yourself – what is true is not a challenge unique to the modern era. Even the ancient Greeks had to confront different realities.

Having trouble sleeping? Nervous about an important interview? Smelling your partner’s worn clothing may help improve your sleep and calm your nerves.

While it may sound strange to smell your partner’s clothing, these behaviors are surprisingly common. In one study, researchers asked participants if they had ever slept with or smelled their partners’ worn clothing during periods of separation. Over 80 per cent of women and 50 per cent of men reported they had intentionally smelled an absent partner’s clothing. Most of them said they did so because it made them feel relaxed or secure.

Today, women will celebrate Galentine’s Day, a holiday trumpeting the joys of female friendships.

The holiday can trace its origins to a 2010 episode of “Parks and Rec,” in which the main character, Leslie Knope, decides that the day before Valentine’s Day should be an opportunity to celebrate the platonic love among women, ideally with booze and breakfast food.

In the years since the episode aired, the fictional holiday has caught on in the real world.

As we lick our Valentine card envelopes and slip into something more comfortable, it’s a good time to ponder our sexual relationships.