Ten years ago, in 2011, energy regulators warned the state’s electric-grid operators that they were ill-prepared for an unprecedented winter storm. Obviously, nobody paid attention to it then. That’s why in this year, 2021, the extreme winter weather that hit Texas in mid-February - dropping several inches of snow and leaving millions without power. As a matter of fact, what essentially caused the storm is global warming. Like the word “global”, it rounds “all over the world”. Texas is just a warn for the harm to nature. It tells human beings to stop destroying the environment.