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Long viewed as a laggard on the garbage front, the city plans to double the amount of waste that it diverts from landfills and place more recycling receptacles in public spaces.

Under regulations that took effect on Jan. 1, airlines that fail to pay emissions allowances in flying into European Union countries can be fined per ton of carbon dioxide. Persistent offenders could be banned.

Around the country, eco-conscious parks, businesses and local jurisdictions have devised interesting ways of recycling trees.

About 50 adult fish along the Clark Fork River in Idaho and Montana are captured and transferred each year at an annual cost of $250,000 to undo fragmentation linked to the construction of hydroelectric dams.

Coca-Cola and Pepsi both say they plan to produce soda bottles made wholly from plants, but don’t expect large-scale production soon.

Starbucks experiments with a portable store made of abandoned steel shipping crates.

We need to ask more about how our castoffs are processed, especially lead batteries that are sent out of the country.

Composting kits, herb keepers, video games that acquaint children with energy sources — the range of green gifts has expanded.

Choosing an authentically green gift may seem daunting. But there is an ever-expanding array of options, from bike lights that don’t need batteries to planet-friendly water bottles.