Some international destinations have circulating poliovirus. Before any international travel, make sure you are up to date on your polio vaccines. Country List : Afghanistan, Algeria, Benin, Cameroon, Chad, Côte d’Ivoire (Ivory Coast), Democratic Republic of the Congo, Niger, Nigeria, Pakistan, Somalia, Yemen, Sudan, Angola, Ethiopia, Republic of South Sudan, Djibouti, Germany, United Kingdom, including England, Scotland, Wales, and Northern Ireland, Papua New Guinea, Central African Republic, Tanzania, including Zanzibar, Laos, Namibia, Mali, Malawi, Zambia, Togo, Israel, the West Bank and Gaza

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In-brief analysis

September 22, 2026

Data source: Enverus
Note: Crude oil and natural gas production in barrels of oil equivalent

Publicly traded companies represent a tiny share of the total number of companies producing crude oil and natural gas in the United States, but they make up a large share of U.S. production. In 2025, publicly traded companies accounted for just 2% of about 12,000 oil and natural gas producers but produced 68% of the crude oil and natural gas in the Lower 48 states.

Massive scale, prime drilling locations, and advanced technologies help publicly traded oil and gas producers maintain their edge on production. Publicly traded companies generally report lower breakeven prices—the minimum price needed to cover operating costs—than privately held companies. These lower breakeven prices are driven in part by higher-quality

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Solutions-oriented research is improving the lives of American people. NSF-supported researcher Jeremy Brown discusses his work developing interfaces with haptic feedback, including upper-limb prosthetics, rehabilitation tools, and surgical robotics.

Listen to NSF Discovery Files wherever you get your podcasts.

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