During the Vietnam War, North Vietnamese VietCong guerrillas built a vast network of tunnels in the south of the country as part of the insurgency against the South Vietnamese government and their American allies. The tunnel network was a key base and shelter for the North Vietna ...Show more
Bangladesh: The first country to impose a plastic bag ban
On 1 January 2002, Bangladesh became the first country to ban single use plastic bags, following a unanimous parliamentary vote. In the gallery sat Shahriar Hossain, returning from years in exile to witness the outcome of a campaign he had helped to drive. The roots of that decis ...Show more
The Contact Lens. The humble Contact Lens. Oh boy, do we have a rip-roaring episode for you about the humble contact lens.Nazi villains, arrests by secret police, chance encounters on trains and fear of Soviet invasion. And in the middle of it all, an unlikely hero: a Czech chemi ...Show more
Listener Jennifer is considering switching contact lenses, if there's an alternative that's more eco friendly. She's not alone - we've had lots of questions about eyecare options, and whether the fancy features some lenses offer are worth the extra cash. Joining Greg and Jennifer ...Show more
Autofocusing reading glasses of the future | Nitish Padmanaban
As you age, you gradually lose the ability to refocus your eyes -- a phenomenon as old as humanity itself -- leading to a reliance on bifocals, contacts and procedures like LASIK surgery. Electrical engineer Nitish Padmanaban offers a glimpse of cutting-edge tech that's truly a s ...Show more