Test out your green car awareness by seeing if you can name the 2014 World Green Car of the Year. Note: it has to be a new model.

The EPA has just released official "fuel economy" and range information for the BMW i3 100% electric car.

In a funny twist, one of the stars of an extremely popular car show (Top Gear) whose script smeared Tesla is now going electric. James May is getting a BMW i3.

Ed. note: This post, about ethanol is now the third post (read about biodiesel and compost to catch up) in the Green Basics series of posts that TreeHugger is writing to provide basic information about important ideas, materials and technologies for new

Ed. note: This is now the seventh post in the Green Basics series of posts that TreeHugger is writing to provide basic information about important ideas, materials and technologies for new greenies (or those who just need a quick refresher). Read on and

CFL bulbs, or compact fluorescent light bulbs: energy savings Commonly referred to as CFLs, compact fluorescent lamps or compact fluorescent light bulbs, the energy-saving bulbs have escaped the stereotype of buzzing, flickery, washed-out lights to

Though known colloquially as food that is grown to be more healthy (and is more expensive), in order for organic food to be certified as such, it must be produced under specific, legally-regulated standards and be subject to testing in order to retain

Pollution from power plants, cars, and other transportation is a well-known contributor to outdoor air pollution, but our indoor air quality is often worse; it can be up to 10 times worse for you than the air outside. Microbial pollutants like mold,

What is "post-consumer recycled"? Once a material or finished product has served its intended use and has been diverted or recovered from waste destined for disposal, it is then considered "post-consumer." Having completed its life as a consumer item,

Ecological footprint: what is it? An analysis that gauges our impact on the planet's biological systems, the ecological footprint measures human consumption of natural resources in comparison to Earth's ecological capacity to regenerate them.

In addition to metrics like ecological footprint, each of us (and each of the products and services we use and consume every day) has a carbon footprint; it's a way to measure the relative impact of our actions -- as individuals, as businesses,

The local food movement, eating local, being on the "100 mile diet" or being a locavore are all synonymous with local food, whose consumption has risen to prominence as an

Water, water, everywhere, so let's all have a drink (or so we all learned as kids, right?), but it's definitely not as easy as that these days. In honor of World Water Day (which may or may not have been today), let's

Taking a step back from the emotional response of the recent environmental devastation, let's take a look at offshore drilling more broadly: How much oil do we currently produce from offshore drilling, and how much might we potentially recover?

My word of the year is a little geeky this time around, but it crosses over -- and unites -- fields.

Reducing your carbon footprint and building community go hand-in-hand toward creating a better planet.

Resolve to make these simple changes month by month as a graceful way to ease into a more sustainable lifestyle.

We all have to change the way we live or we are in big trouble. But let's be real about it.

A level playing field for renewables is about to get a step closer, at least in Morocco.

The competition is looking for new ideas for capturing the emissions from fossil fuels and turning them into something useful instead of harmful.

Up until now, only solid materials have offered the ability to capture materials using the filtering power of pores

The researchers have found a simple way to create an energy source for fuel cells using CO2 in the air.

In what is said to be a first for automakers, Ford is developing foams and plastics using captured carbon dioxide, which could be integrated into the company's vehicles within five years.

Researchers were shocked to discover what part of the bread-making process generates most emissions.

Run on waste heat, this commercial facility is the first of its kind in the world, extracting CO2 from the air and piping it to a greenhouse farm to grow veggies.

Cars are killing us, and it is time to limit the damage to drivers and to people around them, just like we did with smoking.

Evonik and Siemens announce two-year project to demonstrate feasibility of "technical photosynthesis" using eco-electricity to convert carbon dioxide into valuable chemicals

It's also affecting everything from meat packing to crumpets.

The Bitcoin is the Hummer of speculative vehicles; let's hope it doesn't make it to its Bar Mitzvah.

Natural materials are the only ones that sequester carbon rather than produce it.

From Genghis Khan's reforestation to King Edward I's 14th century ban of coal mining, these famous people were dedicated to TreeHugger ethics --- even if they didn't know it.

The latest UN report on sustainable development reads like the TreeHugger archive, in terms of sustainable development solutions.

Everyone is worried about population growth, but in fact it may well be going the other way.

Excessive population growth presents an immediate environmental danger greater than climate change.

Agriculture has become the single largest driver of climate change. It's time to start farming for the whole planet.

On a more positive note, the report also notes that population growth with stabilize sooner than expected, at about 8 billion people by 2042.

The 21st century needs a redefinition of security, to something broader than military terms, a relic of the Cold War.

Here's why the United Nations' Rio+20 Conference matters to everyone.

Opposition from the G77 Nations and the Vatican led to the removal of the words 'reproductive rights' from the Rio+20 text, leaving in 'acceptable modern methods of family planning'.

How to slow it? Access to voluntary family planning for all women. It more than pays for itself, reducing unwanted pregnancies, abortions, unplanned births... And helps reduce humanity's environmental impact.

The brilliant Hans Rosling has a data visualization video that helps debunk the myths of the birth and child mortality rates of the so-called developed and developing countries.

Graphic designer Jack Hagley's new infographic shows the world's population as 100 people.

The most recent U.N. demographic projections show world population growing to 9.3 billion by 2050, an addition of 2.3 billion people.

As food supplies have tightened, a new geopolitics of food has emerged—a world in which the global competition for land and water is intensifying and each country is fending for itself.

This large format photo book features hundreds of stunning images highlighting the effects that our global population of 7 billion (and growing) has on the Earth.

Says the United Nations Department of Economic and Social Affairs.

Today is Earth Overshoot Day, but it's not exactly something we should be celebrating. It's actually a wakeup call for humanity.

Concerned about the overpopulation of our planet and the effect it has on wildlife? Perhaps it's time to talk about the most effective form of male contraception.

If the latest projections prove to be accurate, we need to plan for about a 10% increase in the needed supply of food, drinking water, and energy, and in carbon dioxide emissions by 2050.

On National Book Lovers Day, we celebrate the ultimate slow hobby.