How did the government get into the business of decreeing how many miles per gallon new cars (and trucks) must deliver? The authority to do this is nowhere to be found in the Constitution — though ...

With the Southwest drying up, water guzzlers placed throughout the San Juan Mountains for wildlife are becoming ever more important. Through the 1970s and 1980s, the U.S. Forest Service, in ...

Even today in this eco-conscious society, many car manufacturers still produce gas guzzlers. If you’re in the market for a new car this year, here are some cars to avoid due to their poor mileage.

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. Accounting for the total costs of ownership ...

The long-term fate of the Peninsular bighorn sheep is largely unknown given climate change, a lack of state monitoring and recent allegations of negligence at the Anza-Borrego Desert State Park.

With gas prices increasing, it’s important to be aware of how certain vehicles fuel efficiency will impact your wallet. In fact, one of the fundamental criteria of choosing your next car purchase ...

Is that a breath of fresh air we detect coming out of Washington? President Biden’s announcement on Thursday of new standards to cut greenhouse gas emissions and raise fuel efficiency in cars and ...

The Colorado River Basin states have missed the latest deadline to come up with a plan to save the River, putting water for 40 million people at risk. Leaders must act. The Colorado River Basin states ...