2:04 play_arrow Interesting history of umbrellas Idrees Ullah visibility 11 schedule 2 years ago favorite
1:10 play_arrow How is a borehole dug for water? | پانی کے لیے بورہول کیسے کھودا جاتا ہے؟ Idrees Ullah visibility 3 schedule 2 years ago favorite
0:30 play_arrow Are lizards poisonous or not? Idrees Ullah visibility 0 schedule 2 years ago favorite
1:39 play_arrow Why does the Queen of the Night flower only bloom at night? | رات کی ملکہ کا پھول صرف رات کو ہی کیوں کھلتا ہے؟ Idrees Ullah visibility 1 schedule 2 years ago favorite
0:51 play_arrow History of thermos | تھرموس کی تاریخ Idrees Ullah visibility 1 schedule 2 years ago favorite