||Are Global Warming
Global warming -- you may accept or reject those who say it is a
dangerous phenomenon. But if the planet is warming, and humanity
is contributing to it, shouldn't someone be thinking about solutions?
If the Earth is, in fact, engaged in a long-term warming cycle --
and if humanity is partly responsible -- can it be reversed?
Scientist Richard Somerville of the Scripps Institution of Oceanography
believes it can be. "Yes, but not overnight. The way to reverse
it is to reduce the emission of CO2 (Carbon Dioxide) into the atmosphere.
One thing you can do is capture the CO2 as its emitted, and sequester
it. The other is to reduce your dependence on fossil fuels."
Possible solutions to global warming range from the simple to the
complex -- from changing a light bulb to engineering giant reflectors
in space. The most talked about solutions involve expanded use of
alternative energy technologies, and less reliance on fossil fuels.
Climate scientist Michael MacCracken says society has to make the
commitment to change. "You have to commit to taking actions
that will require society to do certain things, but many of those
can be beneficial and helpful, but we're going to have to change
the path that we are on and how we get energy."
Some scientists believe global warming is part of a natural cycle
and will take care of itself.
Public policy researcher Myron Ebell of the Competitive Enterprise
Institute issues a caution. "There will be some negative consequences
or impacts, and there will be some positive ones. I don't think
either one, either the negative or the positive will be particularly
pronounced or extreme or severe."
Volcanoes, forest fires, ocean and atmospheric variability are natural
occurrences that change climate conditions. Might nature correct
the warming trend itself?
Somerville says, "That seems very unlikely. Science doesn't
give you certainties. Science gives you likelihood, but we think
that it's likely that climate warming of the last few decades isn't
due to the usual causes -- changes in the Earth's orbit, changes
in the sun, volcanoes, but it's due primarily to humans adding greenhouse
gases to the atmosphere."
Public policy expert Myron Ebell says, "We know that there
is a lot of natural variability in the climate. We know that people
in some regions of the world at various times have lived with climates
that are much warmer and much cooler than now and all the historic
evidence is that they somehow managed to survive that."
John Topping of the nonprofit Climate Institute says it will be
private industry -- not governments -- coming up with solutions.
"We need to get investment flows going in the direction of
emerging clean energy technologies. Part of that's going to happen
because we, as consumers, step forward and we are conscious in our
buying habits to get more energy-efficient products."
Higher gas prices are making fuel-efficient vehicles more attractive
to consumers. Building and home constructions are becoming more
Topping says for individuals, industries and nations dealing with
climate change is a matter of thinking smart. "Climate change
is a huge challenge. But climate change also provides an opportunity
for countries to really further themselves, and that's the only
way we're going to advance much globally, is to look at approaches
that protect the environment at the same time that they promote
equitable economic growth."
Topping says Iceland is a good example. "About 50 years ago,
they were a huge importer of coal from abroad and relatively poor,
but they realized if they could use the geothermal for heating,
they could convert their energy system for electricity mostly to
renewables. Iceland now has the sixth highest per capita income
in the world."
Wider application of renewable energy resources could reduce greenhouse
gases and offset global warming. Some scientists are suggesting
grander solutions, involving rearranging Earth's environment; building
huge sunshades in space, for example, tinkering with clouds to make
them reflect more sunlight, perhaps tricking oceans into soaking
up more heat-trapping gases.
Climate scientist Michael MacCracken recommends first steps. "There
are a host of things to do first. Many different technologies that
are cost effective right now. What we need to do is do as many and
all of them as we can before we get into these geoengineering technologies
that basically only serve to continue our addiction to fossil fuels."
Somerville sums up the search for global warming solutions this
way: "We need to waste far less energy than the energy we waste
now. Furthermore, it has to be a global effort."
Changes in the Automobile Industry
Hybrid Cars to Run On Hydrogen
© Contacto Magazine - September 28, 2006