Frog blog: Hunt for world's rarest frogs

Brazil makes 'rainforest' condoms
The Brazilian government begins producing condoms using rubber from trees in the Amazon.

'Frog from hell' fossil unearthed
A 70-million-year-old fossil of a giant frog has been unearthed in Madagascar by a team of UK and US scientists.

Sierra Leone sets up forest park
Sierra Leone launches a scheme to save a rainforest, which campaigners say will help fight climate change.

Ant invader knocks on UK's door
A recently identified ant which wipes out native species is finding new homes in northern Europe.

Harbour seals' decline 'alarming'
Marine biologists are baffled by a dramatic decline in numbers of harbour - or common - seals from UK shores.