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Heat by design: Can cities be cooled without air conditioning?
<p>Cities heat up faster than surrounding areas because of how they’re built.</p> <p>Urban areas can be up to 5.6 degrees Celsius warmer than nearby regions because of roads, concrete surfaces and dense construction that absorb heat during the day and release it slowly at night,
First seen · 9:02 AM UTCMay 3, 2026
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Hindi Cinema Day
Marks the release of Raja Harishchandra in 1913, India's first feature film. Bollywood now produces over 1,500 films a year — more than any other film industry on earth.
+1Public holiday
Constitution Day
Constitution Day is observed in Poland (Święto Narodowe Trzeciego Maja). Recognized nationally.
Public holiday
The Day of the Cross
The Day of the Cross is observed in El Salvador (Día de la Cru). Recognized nationally.
Public holiday
Festival of the Crosses
Festival of the Crosses is observed in Venezuela (Día del Cruz del Mayo). Recognized nationally.
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