When we properly understand animals, how much will our relationship with them change?
Jim Al-Khalili talks to Dr Ann Clarke about preserving global animal DNA in The Frozen Ark
Does a second feel the same for a fly, a bird, or a swordfish, as it does for me?
Edi Stark asks the ultimate twins question: Does any other relationship come close?
Edi Stark finds out how the special bond between twins isn't always a happy one.
Alice Roberts asks if a UK baby boom could damage the planet.
What can animals tell us about the origins of our numerical abilities?
What shells can tell us about our past, present and future.
Twins Gillian and Tracy and one half of twin sisters, Jasmine, share their stories with Fi
Identical twin sisters talk about their different choices to follow Islam and Christianity