WASHINGTON (AP) — Near Antarctica, whales are singing in deeper tones to cut through the noise of melting icebergs. In California, a big college football rivalry game was postponed until Saturday because of smoky air from wildfires. And Alaskan shellfish were struck by an outbreak of warm water bacteria.

That's global warming in action. Climate change is more than heat waves, hurricanes, floods, droughts, sea level rise, melting ice and ever-increasing temperatures.

Sometimes global warming has a hand —directly or indirectly — in something quirky, such as the pitch change in five baleen whale...