A heatwave is occurring, and some outlets suggest it may be linked to a rare ocean anomaly, referred to as a "cold blob", in the north Atlantic. The "cold blob" is puzzling scientists, with some studies indicating it could be a warning sign about a key current system. The relationship between the "cold blob" and the heatwave is not entirely clear, with some outlets implying a direct connection and others noting the anomaly as a concern amidst the heatwave.