Category:1840s in the environment

• Environment portal

This category is for articles that relate to the natural environment in the decade 1840s. They include the human impact on the environment, environmental law, conservation, environmentalism and environmental issues.

• 1790s
• 1800s
• 1810s
• 1820s
• 1830s
• 1840s
• 1850s
• 1860s
• 1870s
• 1880s
• 1890s

• 14th
• 15th
• 16th
• 17th
• 18th
• 19th
• 20th
• 21st
• 22nd
• 23rd
• 24th