Topics from December 2015 Why do clothes look dark when immersed in water? Posted by Keshav Jain on Sunday, December 20. 2015 Why is TFM mentioned on soap wrappers? Posted by Keshav Jain on Sunday, December 20. 2015 What does the term "vacuum evaporated" printed on iodised salt packets mean? Posted by Keshav Jain on Sunday, December 20. 2015 What is food poisoning? Posted by Keshav Jain on Sunday, December 20. 2015 Why are satellites always launched from the east coast? Posted by Keshav Jain on Sunday, December 20. 2015 How does a cell phone work? Posted by Keshav Jain on Sunday, December 20. 2015