Related Clues:

• Antarctic covering
• 'An Inconvenient Truth' topic
• See 131 Across
• Shrinking feature
• Polar region
• South Pole feature
• Arctic covering
• Polar expanse
• Arctic topper
• Polar peak
• Global warming casualty
• Global warming panel concern
• Greenhouse gas victim
• Top-of-the-world topper
• Mountain peak covering, often