Adam Clare

An Introduction to Green Roofs

Want to get the low-down on something that could be above your head? Well here’s what you’ve been looking for: an introduction to green roofs!

Roof types

There are two basic types of roof greening covers: intensive (roof gardens) and extensive. Intensive planted roofs have a greater depth of growing medium to support a wider range of planting, and often include shrubs and trees. Extensive roofs are systems with low growing plants, such as sedums, with no access other than for occasional maintenance; this type of roof is intended to be self sustaining.

There are three main methods of building up a green roof:

Inverted roof – has the insulation layer above the roof deck, on top of the waterproofing layer; usually constructed over a concrete roof deck.
Warm roof – has the insulation layer on top of the roof deck and the waterproofing layer on top of the insulation. In this system the insulation is always dry, giving a static thermal rating.
Cold roof – has the waterproofing membrane placed directly on top of the roof deck, with the insulation installed below the roof deck, or the roof may be uninsulated.

Sustainability issues

Green roofs are recognised as important in the delay of rainwater run-off entering the storm water system, and the general retention of rainwater. Other recognized environmental advantages of green roofs include:

Improved conservation and biodiversity.
Provision of new wildlife habitat.
Improved thermal insulation of buildings.
Reduction of airborne particulates.
Reduction in urban heat island effect.

Be Less Angry by Getting Educated and Ageing

Researchers from the University of Toronto have found out some the primary reasons people get angry. Thanks to their research we now know what one can do to lower their anger levels: get an education and keep on living.

It was found that younger people experience more frequent anger than older adults. This is mainly due to the fact that younger people are more likely to feel time pressures, economic hardship, and interpersonal conflict in the workplace (three core stressors that elevate anger levels).

Feeling rushed for time is the strongest predictor of anger, especially the “low-grade” forms like feeling annoyed, revealed the study.

Having children in the household is associated with angry feelings and behaviour (i.e., yelling) and these patterns are stronger among women compared to men.

As compared to people with fewer years of education, the well educated are less likely to experience anger, and when they do, they are more likely to act proactively (e.g., trying to change the situation or talking it over).

Time in Nature Makes People More Caring

This is good news for nature lovers and another reason to go outside and enjoy the world: the more time you spend experiencing nature makes you more caring.

Recent research suggests that spending time in nature actually makes people “more caring.” The studies, by University of Rochester psychologists Netta Weinstein, Andrew Przybylski, and Richard Ryan, showed that people exposed to nature (well, mostly slideshows of nature) put a higher value on intrinsic aspirations, such as doing good in the world or having meaningful relationships, and lower value on extrinsic aspirations, like making a lot of cash or admired by many people. Now as I mentioned, the participants didn’t actually live outdoors for a while or anything as part of the study. Rather, in three of the studies, they looked at images of either the built environment or landscapes and such. And in the fourth, some participants were assigned to work in a laboratory either with or without plants around them. Then they answered a series of questions or were given tests of generosity. “The result? People who were in contact with nature were more willing to open their wallets and share. As with aspirations, the higher the immersion in nature, the more likely subjects were to be generous with their winnings.”

A Good Night’s Sleep is Amazing

Apparently the best thing you can do is for your body is give it a good night’s sleep.

But a new study presented at the 2009 meeting of the Society for Neuroscience shows how disrupting your sleep cycle can interfere with your health and cognitive function. (1) Researchers from Rockefeller University disrupted the circadian rhythms of mice by exposing them to 10 hours of light followed by 10 hours of darkness. After two months of this, the mice were in need of more than a little nap. They had difficulty learning. They were more impulsive. And they got fat, thanks in part to changes in appetite hormones and metabolism.

These changes all reflect a problem with one thing: self-regulation. Even at the most basic task of homeostasis-maintaining normal body temperature-these mice were messed up. One reason why: The researchers found changes in the animals’ medial prefrontal cortex, the area of the brain most important for self-control. This area of the brain is especially sensitive to disruptions in sleep and diet.

This isn’t the first study to show that interrupting natural sleep cycles is harmful. A previous study (whose mouse participants were even more unfortunate) found that chronic jet lag can be fatal. (2) Uh, yikes. Suddenly my frequent flier miles are looking less appealing. Another study, this time with hamsters in the unfortunate role of the sleep-disrupted, found that altering natural circadian rhythms results in systemic organ disease. (3)

Plenty of other studies have found that the more common sleep problem-not enough-interferes with stress management, emotion regulation, learning, and willpower.

Keep reading at Psychology Today.

Cyclists Can Raise Property Values

Providing a safe place to lock up bicycles can increase the rental and property value of a home or apartment complex.

To a cyclist like myself this seems painfully obvious, but to people living in the world of the car I guess, well, they don’t understand and need to be told this be a real estate company.

While car parking has long been a factor considered by potential landlords, Ludlow Thompson argue, it’s important now that they also think about where would-be tenants can keep their bikes. Decent bike provision could even increase the property’s price or rental value, it effectively says.

The chain operates only in London, but the advice of the eponymous Stephen Ludlow would seem relevant to anyone thinking of letting a property in an urban area:

Cyclists are increasingly important if you intend to let or sell to the 20-35 year old post-university market. Cyclists prefer not to leave their bike chained up on the street.
When renting a flat in converted houses, cyclists often ask if they can leave their bicycle in the shared hallway. Most contracts explicitly prevent this because if often leads to damage and can upset the other tenants. By agreeing, a landlord might have the edge if a tenant is weighing up two options.
Landlords of ex-local authority and new build housing can often offer the best solution, as those properties frequently provide storage sheds which are perfect for bicycles. But landlords in other housing types can make their properties more attractive to cyclists by installing safe storage, such as a secure shed unit which will fit in even a small front garden. Landlords that are leaseholders â€“ either in a converted house or in a more modern block â€“ can be proactive and negotiate with other leaseholders and the freeholder to provide shared storage. There will often be a net benefit as the desirability of the property is improved.

Read the rest at the Guardian.