Unprecedented floods in Pakistan: Largest lake could burst its banks

More than 6 million people are in urgent need of help in Pakistan, which is grappling with the worst floods in living memory. Since mid-June, unprecedented monsoon rains have left more than 1,300 dead, washed away entire villages and destroyed farmlands. Our team on the ground travelled to the southern Sindh province, where the country's largest lake is on the verge of overflowing.