What in nature is best at keeping time? Do we focus as much effort on the sea as we do space? When’s the best time to have kids? Matt, James, Fran and Sophie work out the truth.

How much heat from the sun would it take to turn a beach into glass? Which is the ugliest animal? What is the fastest growing thing on the planet? Josie, Matt, Sophie and Fran hunt down the answers.

What’s the most socially contagious thing after yawning? Which animal has the best memory per hour alive? If we all disappear tomorrow, how long would it take for all traces of us to vanish? James, Fran, Matt and Sophie find out.

What’s the best type of cloud? What’s the most adventurous of flies? In 50 years, our grandkids will say ‘I can’t believe you grew up without...’ what? Sophie, Paul, Matt and special guest Erica McAlister discuss.

What’s the best water? Which wearable material would keep you the warmest and the driest? What’s the fastest food? Fran, Sophie, Josie and Matt discover the truth.

How many plants would you have to carry around with you to replace all the oxygen you use when breathing? What’s the loudest animal on earth? Why is it so hard to get out of bed in the morning? Paul, Matt, Sophie and special guest Tom Crawford reveal all.

How many New Year’s Eves can you celebrate by crossing different time zones? How long would you like to be frozen in ice for? What’s the most precious gift you can give someone? Matt, Josie, Fran and James find some answers.

James Hay, Josie, Matthew and special guest Laurie Blair discuss holding hands for miles, the mafia WhatsApp group and Crater Face McGee.

Josie, Matthew, James Hay and special guest Laurie Blair discuss the coolest name in the animal kingdom, squirting lava from a hole, and sea loot.

Fran, James Wells, Matthew and Josie discuss having too much love to give, Hartlepool, and hot-cold confusion.

James, Matthew, Fran and Sophie discuss eating an aeroplane, Martian sunsets, and a pillar made of slugs.

Matthew, Sophie, and two special guests, Philly and Nathan, discuss Demogorgon robots, penises with legs and eating chips and gravy off the floor.

Sophie, Josie, Matthew and special guest Paul Stubley discuss Randy Gardner's ribbon, Josie drinking waterpark water, and a bathtub of ice-cream with two portions of fries.

Matthew, Josie, Sophie and special guest Paul Stubley discuss an atmosphere made of fish, Champagne Boy, and eating three breals a day.

In our festive special Fran, Sophie, James Wells and Matthew discuss the Christmas stick, 1000 mince pies, and teething toddler Jesus.

Sophie, Matthew, Josie and special guest Paul Stubley discuss setting your hair on fire as a conversation starter, Popworld on Mars, and trampoline rooms.

Josie, Matthew, James Hay and special guest Paul Stubley discuss carpeted Everest, helium stockpiles and Hollywood frogs.

James Hay, Josie, Matthew and special guest Paul Stubley discuss Clever Hans the maths horse, not chomping, and laser guided udder seekers.

Matthew, James Wells, Josie and special guest James Hartley discuss ‘no-hands!’ surgery, last place blue, brown bread ice cream, and wine-glugging parrots.

Josie, Matthew, James Wells and special guest James Hartley discuss being like Mario, living underwater in a shopping centre, and death by jiggling.

James, Fran, Matthew and Tom discuss hangover causes and flying cats, with Fran speaking some Spanish thrown in.Warning: if you’re a nervous flier, this episode discusses plane crashes.

Tom, Matthew, Fran and James discuss forgetting names, swim bladders, which dog breed they each look like, and belly buttons.

Fran, James, Sophie and Matthew discuss albino zoos, rich people living on the inside of the earth, wolf packs and countless existential crises.

Matthew, Josie, Sophie and James discuss betraying your mates, 50 First Dates, mini-blink-sleeps, and Beyoncé loving whales.

Sophie, James, Matthew and Josie discuss sneaky dolphins, building stars, the truth about how healthy it is to drink coffee, and high speed space junk.

Josie, Matthew, James and Sophie discuss wailing loads, ‘Is it a bird or is it a train?', horrendously un-relaxing experiences, and Sophie letting her shady bucket list slip.

James, Sophie, Josie and Matthew discuss elephants that paint, sweating sunscreen, knee pits, and Josie giving Matthew's videos the cold shoulder.

Matthew, Josie, Sophie and James discuss bee battle cries, stripping stars, Ice 7, and crying on the tube.

Sophie, Matthew, James and Josie discuss happy Denmark, chopping a water bear in half, rollerskating dogs, and the ballooniverse.

James, Sophie, Josie and Matt talk about powerful smarties, naughty beings in the sky, using lasers to spy on conversations, and 2003.

Josie, James, Matt and Sophie talk about reading two books at once, the pursuit of many legs, sardine milk, and supermarket musicals.

Matt, Fran, Josie and James talk about dirty soap, eating your tail, fancy pink salt, and lonely whales.