today, azizah and siti are visiting 88-year-old zahara hassan. her children moved away long ago, and she lives on her own. >> i'm staying here. it's my home. i'm not going anywhere. >> in many developing countries, ensuring the elderly can enjoy their old age in dignity against a backdrop of rapid social change is a new challenge. it's no longer a private duty. it's now a public one. >> now, what to do when a glacier is one your main tourist attractions and you see it melting away before your eyes? the answer is highly dependant on where you live. engelberg in switzerland is a high-tech region that depends on tourists coming to see its famous glacier. and it certainly wasn't going to just sit by and watch it disappear. steps are now being taken to ensure visitors get what they have been promised in the glossy brochures. >> they've travelled halfway around the world to play in the snow. for many asian tourists, a trip to the swiss alps is as much a part of the european experience as the colosseum or the eiffel tower. but these days, it's looking l