tree dayPrimary references
Each article names the sources it uses. This directory is the broader research collection behind the edition; it is not a claim that every source supports every story.
- Arbor Day Foundation: Tree care and maintenance ↗
- New York DEC: How to plant a tree ↗
- Arbor Day Foundation: Planting bare-root trees ↗
- US EPA: Composting at home ↗
- US EPA WaterSense: Outdoors ↗
- US Fish and Wildlife Service: Pollinators ↗
- NASA: What is climate change? ↗
- NASA: Causes of climate change ↗
- UN: Net zero explained ↗
- USGS: Water Science School ↗
- US EPA WaterSense: Start saving ↗
- US EPA: Why wetlands are important ↗
- ENERGY STAR: Energy savings at home ↗
- ENERGY STAR: Why seal and insulate? ↗
- ENERGY STAR: Home energy improvements ↗
- US EPA: How do I recycle common recyclables? ↗
- US EPA: Institutional purchasers of greener products and services ↗
- US EPA: Preventing wasted food at home ↗
- US National Park Service: What is biodiversity? ↗
- National Invasive Species Information Center: What are invasive species? ↗
- UN: Food and climate change ↗
- USDA NRCS: Soil health in Virginia ↗
- US EPA: Stormwater management research ↗
- US EPA: Using trees and vegetation to reduce heat islands ↗
- UN Decade: What is ecosystem restoration? ↗
- NASA: What causes the seasons? ↗
- US National Park Service: Leave No Trace seven principles ↗
- ENO Schoolnet: Tree planting days and history ↗
- UNEP: Nature restoration progress report, 29 October 2026 ↗
- UNEP: Ocean Carbon Intelligence, 28 October 2026 ↗
- UNEP: Mountain and freshwater initiative, 28 October 2026 ↗
- UNEP: Emissions Gap Report, 21 October 2026 ↗
- UNEP: Great Green Wall initiative, 6 October 2026 ↗
- WMO: Seasonal climate outlook, 26 October 2026 ↗
- Australian Bureau of Meteorology: Indian Ocean Dipole ↗
- US EPA: Wildfires ↗
- US EPA: Frequent questions about wildland fire smoke ↗
- National Weather Service: Weather Watcher Guide ↗
- NASA: Ocean warming ↗
- US EPA: Consumer Confidence Report information for consumers ↗
- Harvard Arnold Arboretum: Each year in the forest—autumn ↗
- Penn State Extension: From the woods—ten important hardwoods ↗
- Penn State Extension: Planting trees in your community forest ↗
- NOAA Ocean Acidification Program: What is ocean acidification? ↗
- NOAA Ocean Service: What is blue carbon? ↗
- NOAA Ocean Service: What are microplastics? ↗
- NOAA Ocean Service: What are El Niño and La Niña? ↗
- US Energy Information Administration: Measuring electricity ↗
- US Department of Energy: Solar photovoltaic technology basics ↗
- US Department of Energy: Solar photovoltaic system design basics ↗
- ENERGY STAR: Air-source heat pumps ↗
- US Fish and Wildlife Service: Bird-friendly home toolkit ↗
- USGS: Groundwater—what is groundwater? ↗
- Convention on Biological Diversity: UN Biodiversity Conference charts Yerevan Pathway to accelerate global action for nature ↗
- Convention on Biological Diversity: UN Secretary-General launches first global assessment of progress under world’s landmark biodiversity agreement ↗
- European Commission: Commission and UNEP reaffirm commitment to global environmental action and multilateralism ↗
- NASA Earth Observatory: Fires Arrive in the Amazon Rainforest ↗
- NOAA National Centers for Environmental Information: Monitoring the U.S. Temperature and Precipitation in September 2026 ↗
- Copernicus Climate Change Service: Copernicus: Second warmest September as global temperatures stay above 1.5°C ↗
- UN Environment Programme: How women are steering Asia's shift to electric buses ↗
- UN Environment Programme: Could electric vehicles help this African capital clean its air and fight climate change? ↗
- UN Environment Programme: Nairobi Convention marks 40 years as COP12 charts future of ocean governance ↗
- UN Environment Programme: Mercury has long sickened and killed. Could the tide finally be turning? ↗
- UN Environment Programme: Cool Leaders, a roadmap and nature for cooling: Global Cooling Pledge acts on heat ↗
- NASA Earth Observatory: Arnab Strikes India ↗
- Food and Agriculture Organization of the United Nations: FAO Food Price Index rises in September amid weather concerns and transport disruptions ↗
- European Commission: EU Water Resilience Investment Accelerator: Supporting financing for water-related projects ↗