Demonstrations in Hong Kong have sprung up over recent electoral changes announced by the Chinese government. Trace explains what near- and long-term issues have motivated protesters to take to the streets.
When you hold an object, like a book and a metal iPhone, which feels colder? You'd probably say the metal or glass object every time, over a warm book. The problem is, the difference in temperature isn't really what you're feeling.
This video from ABC in Australia explains the principle of thermal conductivity to people on the street. via Catalyst