Kenric: From what I understand, Science is the reason why everything works. It's just a matter of how.
BLee: To me, science is the reason why everyone in this world can live, physically and environmentally. Science is the way we live.
Yu Hin: Science is the study of the world we live in and our environment so as to understand the world better.
Web Definition: the intellectual and practical activity encompassing the systematic study of the structure and behaviour of the physical and natural world through observation and experiment.