The peculiar Boston tradition that (mostly) keeps the winter parking peace

After snowstorms in Boston, street parking tensions tend to rise, especially when car owners clear out spaces near their residences only to later find another driver has swiped their hard-earned spot. But walk the city’s streets in the wake of a blizzard, and you’ll notice a uniquely Bostonian visual language that aims to keep the parking peace – even if it isn’t always successful. In a decades-old winter tradition codified by a former mayor, residents in most Boston neighbourhoods are allowed to hold their spaces for up to 48 hours using everyday objects. The formerly Boston-based director Sarah Ginsburg explores the peculiar practice in her film Spacesavers. Shot during the winter of 2015 – a record-breaking season for snowfall – the wry observational short offers a distinctive vision of Boston’s winter streets where everything from lawn chairs to walkers and golf bags become ‘keep out’ signs.

Flight manifest: from take-off to landing, a bird’s eye introduction to flying

It seems to be a deeply human experience to catch sight of a bird on the wing and stand there entranced, whether by a hummingbird’s frenetic zipping lines, a hawk’s graceful curves or any of the countless other forms of avian flight. Created by the US animator Stephen Cunnane as a tool to demonstrate realistic bird movements to other animators, this breezy short renders winged flights using silhouettes, detailing the key manoeuvres of avian aerodynamics. If only this how-to manual allowed us to take to the air ourselves… For more from Cunnane, watch his companion animation Animal Gaits.

A horse walks into a pub: on the excruciating trauma of being told a joke

You’re at a party, perhaps finding your next drink, when someone you hardly know comes up and asks: ‘Hey, want to hear a good one?’ The real answer is almost always: ‘No, thank you,’ but as a polite guest, what choice do you really have? This excerpt from the film Shepherd’s Delight (1984) drops the viewer directly into this awkward scenario, with a quip about two racehorses talking shop in a bar. As the joke-teller eagerly addresses his audience, a wry running commentary breaks down the psychological minutiae of joke-telling, including the many emotions – from discomfort to sweet relief – experienced by the audience. Infused with a peculiar, subversive sense of humour, the UK filmmaker John Smith’s short is a mad meta-comedy – clever, a bit mean and discomfitingly relatable.

Don’t misread Darwin: for humans, ‘survival of the fittest’ means being sympathetic

One of the shockwaves from Charles Darwin’s idea that humans evolved from other animals was moral panic. If our ethics are not guided by an omnipotent and all-knowing god and, instead, life is driven by ‘survival of the fittest’ via natural selection, how could we possibly expect humans to behave with anything other than brash self-interest? Yet Darwin’s use of the phrase ‘survival of the fittest’ was hardly meant to suggest that existence was a knockdown, drag-out fight – he was very clear that generosity, sympathy and all those other traits that give us warm feelings are central to human survival. In this short video, the psychologist Dacher Keltner at the University of California, Berkeley puts kindness in evolutionary context, connecting his own recent neural-imaging work on compassion with Darwin’s view that sympathy is a cornerstone of human flourishing.

At the 9/11 Memorial, grief, confusion and remembrance take countless shapes

‘Imagine the despair. Everything standing still… the world standing still.’

The National September 11 Memorial and Museum in downtown Manhattan opened exactly 10 years after the terrorist attacks of 11 September 2011. Footprint: Where the Towers Stood observes the rhythms of a day near the Memorial’s two square reflecting pools that mark the former location of the Twin Towers. Against a background of flowing water and busy city sounds, visitors – largely tourists, from all corners of the world – experience the place in a multitude of ways. There are tears. There are selfie sticks. Parents attempt to explain the the tragedy to children born long after it. Tour guides repeat their well-worn explanations of the Memorial. The site has become what the US filmmaker Sara Newens describes as ‘a tourist destination and graveyard at once’, and she encourages us to observe deeply, noting its strangeness, its solemnity and its many meanings.