| RISINGSEALEVELS | One effect of global warming, and a hint to the five longest Down answers |
| DIGIT | What's handily featured at the starts of the five longest Down answers |
| CLIMATEDENIER | One rejecting issues relating to global warming and, later, medicine, possibly |
| GRETATHUNBERG | Young Swedish environmental activist who is known for urging action on global warming and was nominated for the 2019 Nobel Peace Prize: 2 wds. |
| YOUSEE | "It's like this," and a phonetic hint to the five longest Across answers |
| SWISS | Deli cheese ... or, in three parts, a hint to the five longest across puzzle answers |
| UUUU | What's common to the five longest answers |
| EATING | Warming and taking lid off and consuming (6) |
| GLACIER | Any large mass of perennial ice that starts on land and slowly flows down a slope. The effects of global warming are causing these structures to shrink and disappear. (7) |
| FALLINGLEAVES | Autumn occurrence, and a hint to the start of the other four longest Down answers |
| TOGRINE | Hair growth product ... or a phonetic hint to what's been added to the tops of the longest Down answers |
| ROGAINE | Hair growth product ... or a phonetic hint to what's been added to the tops of the longest Down answers |
| CHANGEOFCLIMATE | Effect of global warming to conflict with a game he played (6,2,7) |
| POLARBEAR | Predator of the northern ice sheets - its range is threatened by the effects of global warming (5,4) |
| JUICEUP | Supercharge, and a hint to whatOs literally hiding in the four longest Down answers |
| LOWHANGINGFRUIT | Easy pickings, and a hint to the four other longest Down answers |
| SEAOTTER | Creature hard to isolate from effect of global warming? (3,5) |
| USBCONNECTION | Common PC hookup, and a feature of the four longest Down answers |
| WHYONEARTH | Head-scratching words ... and, phonetically, a feature of the four longest Down answers |
| PRIVATEPRACTICE | Doctor's self-employment, and a hint to the starts of the five longest across answers |
