Welcome!

Welcome home, Nicky! I hope that you are ready to have your science questions answered. I will try my very best to answer whatever you ask me. You are free to ask any science question you like, and to follow-up on any response that I give you. Answers are only the beginning. You only ever stop learning if you run out of questions.
More than anything, I hope that I can make this fun, and give you some food for thought so that you can ask your next question and keep exploring.