Why Can’t We Experiment On Human Embryonic Stem Cells? Human embryonic stem cell research is incredibly controversial, and the current law says we can only study them for 14 days. Why is this? Facebook Prev Article Next Article Discover Checkout these cool gadgets... Related Posts Is It Possible For Evolution To Reverse? The Most Powerful Magnet In The World The Greatest Mystery of Mankind. Dark Matter Here’s How Hackers Are Trying To Steal Your Credit Card At The Gas Pump The Science Behind Hot Spicy Foods Why Is It So Difficult to Make a Nuclear Weapon?