Category Archives: Environment

How Rotterdam Uses Water to Protect Itself from Flooding

As global warming melts the polar ice caps we are witnessing a human caused increase in sea level. The city of Rotterdam is on the front lines of holding back this tidal increase and they have designed some nifty ways to protect the people that live in the city from the encroaching waves. They are using a rive that flow through the city to act as a giant sponge to absorb any influx of water from storms, this will contain and slow the water from entering parts of the city with lots of people or commerce. It’s a nature-friendly way to deal with a human caused problem.

A €2.3bn “Room for the River” project – making floodplains at more than 30 locations on four rivers – is credited with saving the country from the worst flooding this year. The national delta programme is investing in action to guard until 2050, and a multi-billion euro flood protection programme (HWPB) involves 100 projects to strengthen kilometres of dykes, without which, says Rijkswaterstaat infrastructure organisation, 60% of the country would regularly be under water.

But in cities, too, water protection must meet urban design to create an attractive, adaptive city, says Arnoud Molenaar, Rotterdam’s chief resilience officer. A vast amount of work has been going on, and the city has built water squares, green and blue roofs and a 2km-long railway viaduct rooftop park. The water squares, also designed by De Urbanisten, are, very simply, built in overflow areas – when there is too much rainwater they fill up, and then slowly drain away so that the storm drains are not overwhelmed. And when the water has gone, they become public spaces again.

How Heat Pumps Work

Despite the climate crisis some places (like Canada) are still building houses with fossil fuel based heating systems, and this needs to change. Gas companies and their planet-killing kin have used regulatory capture to ensure their desire to change the climate continues. However, their best efforts to force customers to use dead dino juice people are turning away from old style furnace for new high tech heat pumps.

Heat pumps sound like magic since they somehow extract heat from cold winter air. Thankfully, the Guardian has put together a nice visualization of how heat pumps work. The gif above is not from their english language site.

Whereas gas boilers burn gas to produce heat, heat pumps do something more complicated. Sometimes described as working like a “fridge in reverse”, they use a mixture of evaporation and condensation to transfer heat from outside to inside a building. In a cold winter, it can be hard to understand how these devices work.

See how heat pumps work.

USA to Clamp Down on Methane

When it comes to emissions from fuels methane is amongst the worst. The so-called natural gas is incredibly bad for the planet because it’s so effective at accelerating the greenhouse effect that is warming the Earth. Methane is an easy target as nations around the world are looking to reduce their greenhouse gas emissions because it’s so potent. Following that rationale, the USA has opted to better monitor methane emissions and police companies that are violating emission restrictions. America is one of the worst per capita emitters on the planet so this is a big step in the right direction.

“These are rules of the road,” said Ali Zaidi, the Biden administration’s national climate adviser. “There is no longer an excuse to let these emissions continue to proliferate. Industry has the tools. It has the workforce that’s excited to do this work. And it has every incentive to get after this challenge.”

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The EPA also said the plan would prevent an estimated 58 million tons of methane emissions from 2024 to 2038, the equivalent of 1.5 billion metric tons of carbon dioxide, and will yield total net benefits of $97 billion to $98 billion from 2024 to 2038, after taking into account the costs of compliance and savings from recovered natural gas.

Let’s Mine Landfills for Profit

Extracting resources from under the ground is an expensive and environmentally harmful thing to do. It’s also political challenging in many places to open (or expand) new mining operations, the recent court ruling in Panama demonstrates this. For decades we’ve been tossing perfectly good metals into landfills, so why not mine landfills? In some parts of the world it is economically feasible to so, but in the USA subsidized fossil fuels make the business case to mine landfills more difficult. Still, it’s only a matter of time until landfill mining becomes profitable in North America.

This story showcases one of the issues facing landfill mining in the United States. In Europe, where they view landfills more negatively, they’ve been mining old landfill sites for decades. So why isn’t it more popular here? In simple terms, we have a separate set of motivations. Energy costs are still comparatively low because of the availability of fossil fuels and natural gas, so we don’t value the energy potential of waste buried in landfills. There is not a strong appetite for energy from waste in many locations that could benefit from the energy value of buried plastics and undegraded organic material. Landfill mining is expensive relative to the cost of developing a new landfill site or just transporting waste to a regional disposal facility in someone else’s backyard. The costs for excavation, physical screening, and managing odors and liquids can be significant barriers.
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The popularity of landfill mining may increase over time, with some shifts in the factors above. In the meantime, we’ll continue to monitor Europe and Asia as they explore cost-effective methods. My 25 years of experience in landfills as a solid waste consulting engineer indicates that landfill mining is an intriguing proposition. But will it become a sizable portion of my practice in the next 15 years? Let’s just say I am not pinching my nose or holding my breath.

Connecting People, Knowledge, and the Environment in Remote Canada

tree with climate knowledge

The Torngat Mountains are gorgeous and after reading this article I now have another place on this beautiful planet that I want to see in person. The article isn’t just about the landscape, it’s about the land and water. There’s currently an effort underway to catalog all the knowledge of locals who have historical wisdom about where they live and combine that with current scientific measurements. This collaboration will help us understand this unique area and repair institutional relationships.

It will also form a part of a 15-chapter research document Laing, Saunders and about 60 other people are putting together as part of the feasibility study for the Inuit-led national marine conservation area — currently dubbed the Torngats Area of Interest. The purpose is to gather all of the information both from western and Inuit Knowledge systems, and to identify any gaps in that understanding of the marine ecosystem beyond the coast of the Torngat Mountains. The two knowledge systems are considered equal. If, for example, western research shows a certain habitat map for char and the Inuit Knowledge study shows an additional area, the feasibility assessment will include both, Laing explains. And climate change is a consideration in every chapter, he adds: what they know now and what the potential implications of climate change could be. “Which is really important because that allows for some forward thinking and planning on that,” he says.

Things Are Good

Inspirational and good news.