National Geographic says that global warming causes El Nino, and retreating Arctic sea ice makes the jet stream wavier.
The Blob That Cooked the Pacific
In 1974, scientists said the exact opposite. Global cooling and increasing Arctic sea ice were making the polar jet wavier.
TIME Magazine Archive Article — Another Ice Age? — Jun. 24, 1974
National Geographic should ban articles about climate. Their authors have no idea what they are talking about, and are destroying their reputation with this kind of idiocy.