Why can’t it always be summer? It’s all about the Earth’s tilt
https://s.yimg.com/ny/api/res/1.2/ZqLzlvfhDNbSKits5Rp84A--/YXBwaWQ9aGlnaGxhbmRlcjt3PTEyNDI7aD04Mjk-/https://media.zenfs.com/en/the_conversation_us_articles_815/70f31a5dd06d50b5b15241ae5293b97e
https://www.yahoo.com/news/why-t-always-summer-earth-153402980.html