10 things you should know about e-bikes

E-bikes in Culver City, Los Angeles. Image: Getty.

So, e-bikes. Electric bikes. Wondering what all the fuss is about? E-curious?

I took the plunge in January. Here’s 10 things I’ve learnt, and why you should pay attention to something that’s turning out to be subtly revolutionary.

1. First surprise: quite how much FUN e-bikes are

You know those days when the wind is at your back, you feel strong, and eating up the miles? The sheer uplifting joy of that feeling? Riding an e-bike is like that all the time.
Ride an e-bike and try not to say, “Wheeee!”

2. E-bikes are simple & natural

There’s no throttle to think about, it senses how hard you pedal, your speed, your gear, while electronic controls make everything else work. The motor just amplifies what you’re doing.
If you can ride a bike, you can ride an e-bike.

No need for special bike-charging points, just unlock the battery, bring it inside to charge.

3. E-bikes aren’t fast, but are quick

The motor cuts out at 15.5mph, by law. You won’t go any faster than usual. But you’ll go slow much less often.

That long slog of a hill? 15mph.

That fierce headwind? 15mph.

Tired after a long day? Still 15mph.

It’s really cut my journey times.

4. E-bikes are still safe

Beforehand, I worried extra speed would be risky. But mostly you’re not going above 15mph, and that extra push gets you ahead of the turning traffic when the lights go green.

Or if the safest route is too long, hilly or stop-start, then a motor makes it an easier choice.

5. E-bikes aren’t cheating

Commuting and utility cycling is not sport, it’s transport. Get over yourself.

It’s not a motorbike, this is e-assist. You still won’t get anywhere without pedalling. 

And you will still get fit on an e-bike. Maybe even more than on a normal bike, because:

6. E-bikes get you cycling further and more often

E-biking is so easy, it takes away that “Can I be bothered to cycle today?” feeling.

Tired? Weather not great? Late meeting? Hungover? Trip’s a bit far? Doesn’t matter, e-bikes takes the effort out.

They will change our perception of what is just an “easy cycle” away. The Dutch are already responding with a network of cycle lanes designed for longer-distance commutes.


7. E-bikes are convenient

In the UK we ride sports bikes, not designed as transport. You know it would be so handy to have mudguards, built-in lights, luggage rack, fat tyres for potholes. But the weight!

Got a motor? No problem. You can ride a tank as if it was air. And e-bikes make it effortless to carry stuff.

8. On an e-bike you don’t have to be “A Cyclist”

Cycle commuting can be a rigmarole. Changing, showers, gear. The British treat it as the equivalent of driving to work in a Formula 1 car dressed like Lewis Hamilton.

E-bikes literally take the sweat out. Drop the Lycra and do it Dutch-style. I now cycle seven miles, in my suit, and just stroll into the office like a normal person. Dress for your destination, not your journey.

9. E-bikes are inclusive 
Most people just want to get around, not chase their Strava times. E-bikes will attract people who don’t identify themselves as cyclists.

Also older or less fit people. Asthma stopped me cycling in cold winter air for years: the e-bike changed that overnight.

10. Now the bad news: e-bikes are expensive

Recharging only costs pennies. But e-bikes are expensive to buy, repair, and insure.

This will change, quite quickly I think, as we reach mass-market adoption. It’s already cheaper than driving or public transport.

11. Finally, why now?

E-bikes aren’t new, but these things are:

  • Lithium batteries light, cheap & powerful enough. 
  • Neodymium magnets for powerful, compact & light motors.

So advances in chemistry, packaged with new electronic controls, add up to something completely new, with really broad appeal.

E-bikes are the future.

Sales are exponential, close to overtaking conventional bikes in some countries, and way ahead of electric car sales. They have the potential to change lots of what we take for granted about cycling.

Just try one, you’ll be hooked. It was hiring an electric Lime bike that convinced me.

It’s time you found out what the fuss is about.

 
 
 
 

The IPPC report on the melting ice caps makes for terrifying reading

A Greeland iceberg, 2007. Image: Getty.

Earlier this year, the Intergovernmental Panel on Climate Change (IPCC) – the UN body responsible for communicating the science of climate breakdown – released its long-awaited Special Report on the Ocean and Cryosphere in a Changing Climate.

Based on almost 7,000 peer-reviewed research articles, the report is a cutting-edge crash course in how human-caused climate breakdown is changing our ice and oceans and what it means for humanity and the living planet. In a nutshell, the news isn’t good.

Cryosphere in decline

Most of us rarely come into contact with the cryosphere, but it is a critical part of our climate system. The term refers to the frozen parts of our planet – the great ice sheets of Greenland and Antarctica, the icebergs that break off and drift in the oceans, the glaciers on our high mountain ranges, our winter snow, the ice on lakes and the polar oceans, and the frozen ground in much of the Arctic landscape called permafrost.

The cryosphere is shrinking. Snow cover is reducing, glaciers and ice sheets are melting and permafrost is thawing. We’ve known this for most of my 25-year career, but the report highlights that melting is accelerating, with potentially disastrous consequences for humanity and marine and high mountain ecosystems.

At the moment, we’re on track to lose more than half of all the permafrost by the end of the century. Thousands of roads and buildings sit on this frozen soil – and their foundations are slowly transitioning to mud. Permafrost also stores almost twice the amount of carbon as is present in the atmosphere. While increased plant growth may be able to offset some of the release of carbon from newly thawed soils, much will be released to the atmosphere, significantly accelerating the pace of global heating.

Sea ice is declining rapidly, and an ice-free Arctic ocean will become a regular summer occurrence as things stand. Indigenous peoples who live in the Arctic are already having to change how they hunt and travel, and some coastal communities are already planning for relocation. Populations of seals, walruses, polar bears, whales and other mammals and sea birds who depend on the ice may crash if sea ice is regularly absent. And as water in its bright-white solid form is much more effective at reflecting heat from the sun, its rapid loss is also accelerating global heating.

Glaciers are also melting. If emissions continue on their current trajectory, smaller glaciers will shrink by more than 80 per cent by the end of the century. This retreat will place increasing strain on the hundreds of millions of people globally who rely on glaciers for water, agriculture, and power. Dangerous landslides, avalanches, rockfalls and floods will become increasingly normal in mountain areas.


Rising oceans, rising problems

All this melting ice means that sea levels are rising. While seas rose globally by around 15cm during the 20th century, they’re now rising more than twice as fast –- and this rate is accelerating.

Thanks to research from myself and others, we now better understand how Antarctica and Greenland’s ice sheets interact with the oceans. As a result, the latest report has upgraded its long-term estimates for how much sea level is expected to rise. Uncertainties still remain, but we’re headed for a rise of between 60 and 110cm by 2100.

Of course, sea level isn’t static. Intense rainfall and cyclones – themselves exacerbated by climate breakdown – can cause water to surge metres above the normal level. The IPCC’s report is very clear: these extreme storm surges we used to expect once per century will now be expected every year by mid-century. In addition to rapidly curbing emissions, we must invest millions to protect at-risk coastal and low-lying areas from flooding and loss of life.

Ocean ecosystems

Up to now, the ocean has taken up more than 90 per cent of the excess heat in the global climate system. Warming to date has already reduced the mixing between water layers and, as a consequence, has reduced the supply of oxygen and nutrients for marine life. By 2100 the ocean will take up five to seven times more heat than it has done in the past 50 years if we don’t change our emissions trajectory. Marine heatwaves are also projected to be more intense, last longer and occur 50 times more often. To top it off, the ocean is becoming more acidic as it continues to absorb a proportion of the carbon dioxide we emit.

Collectively, these pressures place marine life across the globe under unprecedented threat. Some species may move to new waters, but others less able to adapt will decline or even die out. This could cause major problems for communities that depend on local seafood. As it stands, coral reefs – beautiful ecosystems that support thousands of species – will be nearly totally wiped out by the end of the century.

Between the lines

While the document makes some striking statements, it is actually relatively conservative with its conclusions – perhaps because it had to be approved by the 195 nations that ratify the IPCC’s reports. Right now, I would expect that sea level rise and ice melt will occur faster than the report predicts. Ten years ago, I might have said the opposite. But the latest science is painting an increasingly grave picture for the future of our oceans and cryosphere – particularly if we carry on with “business as usual”.

The difference between 1.5°C and 2°C of heating is especially important for the icy poles, which warm much faster than the global average. At 1.5°C of warming, the probability of an ice-free September in the Arctic ocean is one in 100. But at 2°C, we’d expect to see this happening about one-third of the time. Rising sea levels, ocean warming and acidification, melting glaciers, and permafrost also will also happen faster – and with it, the risks to humanity and the living planet increase. It’s up to us and the leaders we choose to stem the rising tide of climate and ecological breakdown.

Mark Brandon, Professor of Polar Oceanography, The Open University.

This article is republished from The Conversation under a Creative Commons license. Read the original article.