can you feel the global warming is developing?

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when i was a young child, my hometown was always covered under silver white snow, and there were thick ice in the lakes. it was very interesting thing that all of us wearing thick and warm clothes running in cold. but now, barely thick snow can be observed and only thin clothes can support a whole winter. what's wrong? and with the time elapses, the warming trend is becoming more and more obvious. can you feel the change? what should we do to prevent it?