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<p>à¨à©±à¨ ਠਧਿà¨à¨¨ ਦਰਸਾà¨à¨à¨¦à¨¾ ਹ੠à¨à¨¿ 1970 ਦ੠ਦਹਾà¨à© ਦ੠ਮà©à¨à¨¾à¨¬à¨²à© à¨à©±à¨ ਠਰਬ ਵਾਧ੠ਲà©à¨ à¨à©±à¨à©-à¨à©±à¨ à¨à©±à¨ ਦਿਨ ਬਹà©à¨¤ à¨à¨¼à¨¿à¨à¨¦à¨¾ à¨à¨°à¨®à© ਦ੠ਤਣਾਠਦਾ ਸਾਹਮਣਾ à¨à¨°à¨¦à© ਹਨ, à¨à¨¹ ਦਰਸਾà¨à¨à¨¦à¨¾ ਹ੠à¨à¨¿ ਦà©à¨¨à©à¨ à¨à¨° ਵਿੱਠਦਿਨ ਠਤ੠ਰਾਤ ਦà©à¨µà¨¾à¨ ਦà©à¨°à¨¾à¨¨ à¨à¨°à¨®à© ਦਾ ਤਣਾਠਬਾਰੰਬਾਰਤਾ, ਤà©à¨¬à¨°à¨¤à¨¾ ਠਤ੠ਮਿà¨à¨¦ ਵਿੱਠਵੱਧ ਰਿਹਾ ਹà©à¥¤</p>
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1970 ਦੇ ਦਹਾਕੇ ਦੇ ਮੁਕਾਬਲੇ ਘੱਟੋ ਘੱਟ ਇੱਕ ਦਿਨ ਇੱਕ ਬਿਲੀਅਨ ਹੋਰ ਲੋਕ ਬਹੁਤ ਜ਼ਿਆਦਾ ਗਰਮੀ ਦੇ ਤਣਾਅ ਦਾ ਸਾਹਮਣਾ ਕਰਦੇ ਹਨ: ਅਧਿਐਨ
