What a silly statement. Let's think about that one. Science is about all the whys.
Philosophy is. Insofar as science is an offshoot of philosophy, it is, too. But modern science has left the "whys" to others. Science today is collecting data and machine solving the 3 basic differential equations. "What" is a goal of modern science. "How" is a goal of modern science. "Why" is of interest to others.
Nope. Science is about "How." Determining "Why" by using science is like trying to learn C++ programming by studying the insides of your computer.