A UN number (United Nations number) is a four-digit number that identifies hazardous materials, and articles (such as explosives, flammable liquids, oxidizers, toxic liquids, etc.) in the framework of international trade and transport.

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UN Adopts First-Ever International Treaty Protecting High Seas

Global warming will likely cross dangerous 1.5 C threshold within 5 years, UN report warns

Plastic pollution could be slashed by 80% by 2040, UN says

In "the most comprehensive analysis yet ... from more than 500 scientific papers" The UN's FAO finds that "meat, eggs, and milk ... offer crucial sources of much-needed nutrients which cannot easily be obtained from plant-based foods"

UN Warns Developing El Niño Could Seriously Add to Warming Woes in 2024

UK criticised for failing to join UN-backed river restoration scheme

World must act now to defuse 'climate time bomb,' UN scientists warn

‘On Thin Ice’: World About To Pass Critical Temperature Threshold, UN Warns

Landmark UN Climate Report Delivers a Key Message: There's Still Time to Act.

What is the UN high seas treaty and will it save the world’s oceans?

Climate change is contributing to the rise of superbugs, new UN report says

AI is Assisting the UN in Preventing Nuclear War

UN says ozone layer slowly healing, hole to mend by 2066

Historic International Deal Hailed by UN a 'Peace Pact With Nature'

How the UN’s ‘Sex Agency’ Uses Tech to Save Mothers’ Lives

The Planet Desperately Needs That UN Plastics Treaty

The UN Just Made a Historic Climate Deal. Here's What You Need to Know

Glaciers in Yellowstone and Yosemite on track to vanish within decades, UN report warns

World Population Reaches 8 Billion, UN Says

UN to hunt sources of climate warming methane from space