The Deepest Ocean Trenches in the World
The Mariana Trench's Challenger Deep, about 10,935 m down, leads 14 ocean trenches ranked by maximum known depth, ahead of Tonga's Horizon Deep and the Philippine Trench. Depths are sonar and pressure estimates with sourced error.
- 1 · Deepest point10,935 m
- 2 · Deeper than 10 km4 trenches
- 3 · Deepest outside the PacificPuerto Rico Trench, 8,376 m
The Longest Road Tunnels in the World
Norway's Lærdal Tunnel leads at 24.51 km, ahead of China's Tianshan Shengli Tunnel (22.13 km, opened December 2025): 14 open road tunnels ranked by length, as of October 2026.
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The Longest Cave Systems in the World
Mammoth Cave in Kentucky leads with 685.6 km of surveyed passage, ahead of Ox Bel Ha, Shuanghedong and Sac Actun: 14 cave systems ranked by surveyed length as of October 2026, with country, type of cave and the date of each figure.
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The Most College Football National Championships by School
Yale leads with 18 NCAA-recognized college football national championships, ahead of Alabama (16), Princeton (15) and Notre Dame (13). As of January 19, 2026, after Indiana's first title.
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The Longest-Serving Current Leaders in the World
As of 21 October 2026, Brunei's Sultan Hassanal Bolkiah has led his country for 59.0 years, ahead of Sweden's Carl XVI Gustaf (53.1) and Equatorial Guinea's Teodoro Obiang (47.2): 17 current national leaders ranked by continuous tenure.
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The Largest Crocodilian Species in the World
The saltwater crocodile is the longest living crocodilian, with typical adult males 4.0 to 5.2 m long. 16 living crocodiles, alligators, caimans and gharials ranked by typical adult-male length, with record lengths, weight, range and IUCN status.
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The Leading Causes of Death in the United States
Heart disease caused 683,491 US deaths in 2024, 22.2 percent of 3,072,666 deaths, ahead of cancer (619,876) and unintentional injuries (197,449): the CDC's final 2024 top 10 by deaths, share and death rate.
View ranking →The Best-Selling Halloween Candy in America
M&M's, Sour Patch Kids, Skittles and Reese's Cups lead CandyStore.com's 2026 ranking of America's top Halloween candies, a projection from 18 seasons of the retailer's own sales data, not audited industry figures.
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The Highest-Grossing Horror Franchises of All Time
Ranked by combined worldwide box office as of 20 October 2026, the Conjuring Universe leads 14 horror franchises with $2.90 billion, ahead of Alien at $2.00 billion and Resident Evil at $1.64 billion.
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The Longest Snake Species in the World
The reticulated python is the longest snake, but the green anaconda is the heaviest. Ranked by the longest reliably recorded length of any individual, with typical size, weight and conservation status for each.
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