A study showing that nearly all mammals take the same amount of time to urinate wins one of the 2015 Ig Nobel prizes.

UK researchers want to use a controversial new genetic technique to carry out research into infertility.

Shimmering phenomena in the night sky - and starry sights billions of light years away - see the finalists in the 2015 Astronomy Photographer of the Year competition.

Tanzania obtains a court order preventing Malawi from burning 2.6 tonnes of ivory, saying it needs to use the tusks as evidence for the prosecution of suspected poachers.

Four captive-bred chicks are sent from Chester to Jerez in Spain, where they will be released as part of an effort to reintroduce the Northern bald ibis.