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Greenland
NATO to Expand in the Arctic
Greenland, Denmark, and the United States are preparing a security agreement that would give the North Atlantic Treaty Organization (NATO) a larger role in the Arctic. The deal is expected to be signed during the United Nations General Assembly in New York City. Denmark says Arctic security should be shared through NATO instead of resting mainly with Copenhagen and Washington. Today, 7 of the 8 Arctic states are NATO members, including several founding members, and the region has long been of prime importance to the alliance. U.S. military cooperation in Greenland dates to a 1951 agreement and now centers on Pituffik Space Base. Greenland, which has about 56,000 residents, has major strategic value given its location between North America and Europe. President Trump says the deal gives Washington permanent security control, while Denmark and Greenland emphasize sovereignty and self-determination. The full agreement has not been released, so details on military access, infrastructure, and foreign investment remain unclear.
This map depicts NATO member countries and their geographic relationship to the Arctic region. NATO members are shaded in blue, Greenland is highlighted in white, and the dashed line marks the Arctic Circle. Click on the map to learn more.
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Graphic Source: Arctic Portal
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United States
1st Dengue Fever Death in Florida
On September 18, the Florida Department of Health announced that an elderly woman passed away due to dengue fever on September 4, marking the first fatality recorded in the state. This aligns with a national rise in dengue cases. This year, there have been 1,927 confirmed dengue cases, with Florida reporting the highest numbers at 332, including over 150 locally-acquired infections. Dengue, often called “breakbone fever,” usually presents with flu-like symptoms, including high fever, severe headaches, pain behind the eyes, and muscle and joint aches. Although rarely fatal, it can lead to severe complications in rare instances, including bleeding and organ damage, according to the Centers for Disease Control and Prevention (CDC). The virus is transmitted by Aedes mosquitoes, particularly Aedes aegypti, which thrive in warm climates and breed in standing water. Most people infected show no symptoms, with about 75% remaining asymptomatic. For those who do show symptoms, they usually appear four to ten days after being bitten, which can complicate diagnosis as it can be mistaken for other illnesses like the flu or COVID-19.
This map depicts reported dengue cases across the United States in 2026, with Florida standing out as the nation’s hotspot. Click on the map to learn more.
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Graphic Source: Newsweek
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Space
Once-in-a-Century Moon Crater
NASA’s Lunar Reconnaissance Orbiter has discovered a new crater wider than Rome’s Colosseum on the Moon. Named McGretchin crater, the 728-foot-wide (222 m) and 141-foot-deep (43 m) feature formed sometime between April 11 and May 22 of 2024, when an asteroid or comet fragment roughly the size of a three- to six-story building struck near the Moon’s eastern limb. Scientists discovered the crater by comparing before and after images from orbiter, making it the largest newly formed crater yet identified in the solar system. An impact large enough to create a crater of this size is estimated to occur only about once a century. The impact reshaped an area far beyond the crater itself, ejecting material that disturbed the lunar surface more than 75 miles (120 km) away. It also created an approximately 4-mile (6.4 km) “cold spot” around the crater, where nighttime temperatures are about 16°F (9°C) colder than the surrounding terrain. Researchers believe that the impact loosened the lunar soil, making it less dense and thus less able to retain heat.
The image depicts the location of the newly formed McGretchin crater near the Moon’s eastern side, with a close-up showing the crater and surrounding ejecta. Click on the map to learn more.
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Q: The Strait of Hormuz was seized by which country in 1515, which institutionalized a licensing system to control and tax maritime trade until the country was expelled in 1622?
A: Portugal
Hormuz in the medieval centuries, from the tenth to the fifteenth century CE, was a dynamic waterway of global trade and part of an extensive maritime network, connecting the Arabian Peninsula to India and more distant markets. In late September 1507, a Portuguese fleet commanded by Afonso de Albuquerque attacked Hormuz Island, defeated the local fleet, and killed many of the island’s inhabitants. In 1515, the Portuguese completed their seizure of Hormuz Island and consolidated their influence by building fortifications. Afonso de Albuquerque was Portugal’s second governor of India, and established Portuguese control over the island until 1622, when a Persian-English alliance dislodged them. Portugal enforced a maritime permit system, requiring all passing merchant vessels to buy licenses and pay heavy tolls. At its peak, tolls and navigation licenses from the Strait of Hormuz provided roughly 18% of total Portuguese royal revenue. Control of the strait allowed Portugal to redirect the lucrative spice, silk, and horse trades through its own imperial ports.
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Q: What is Russia’s most ethnically diverse and heterogeneous region?
Stay tuned for the answer to today’s question in tomorrow’s DailyGeo.
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