Kelsey Johnson: The problem of light pollution -- and 5 ridiculously easy ways to fix it
Kelsey Johnson: A fényszennyezés, és a megoldás öt nevetségesen egyszerű módja
Kelsey Johnson has spent her life in awe of the universe, and she works to inspire that awe in future generations. Full bio
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on the International Space Station,
a Nemzetközi Űrállomásom,
you are super familiar with.
of the United States.
in the lower right,
all the way up through Washington DC.
illuminating our sidewalks,
going up into the sky
probably to anyone
on a summer evening
behind my house,
looking at the night sky.
az éjszakai égbolt szemlélésével.
not only the darkness,
is dacolnom kellett.
really didn't smell very good.
on that star so intensely,
a szemem arra a csillagra,
would fade from my view
would be all that I could see.
of connection to the universe.
a világmindenséghez való kötődésem.
unfathomably insignificant
night after night was called Vega.
bámultam, Vegának hívják.
in the constellation Lyra,
legfényesebb csillaga,
the name of one of my dogs.
így az egyik kutyámat.
from Manhattan.
and suburban environments,
by the majesty of the universe,
completely blank night skies,
és teljesen üres az éjszakai égbolt,
we produce at night.
we see all the way from space
and create this featureless smog of light.
ezt a jellegtelen fényszmogot.
smog of light has a name.
how bad light pollution is
I can see in the sky.
fényessége szempontjából.
a kozmosz titkait megfejteni,
the secrets of the cosmos,
to be able to see the cosmos.
of light-years away,
fényévnyi távolságból érkezik,
it is a really big problem.
hogy ez óriási nehézséget okoz.
whimsical ability to gaze at the stars.
képességünket csillagok bámulására.
species are affected.
és állatfaj létére hat a jelenség.
e nagyon fontos fajok közül,
really a whole lot of thought.
more than about 10 meters.
tesz meg többet 10 méternél.
they are attacking their prey
zsákmányukra támadnak,
of about a millimeter an hour.
szédítő sebességet érhetnek el.
in the intertidal area of coasts,
elárasztott tengerparton él,
of the ecosystem.
gerinctelen ragadozó,
dominant invertebrate predators,
think they're pretty tasty.
és madarak, eléggé ízletesnek találják.
in a kind of precarious situation,
szorult helyzetbe kerül,
telling you about dog whelks?
szólok a tüskéscsigákról?
is impacted by light pollution.
mesterséges fénynek vannak kitéve,
to artificial light at night
to stay under the water with a predator.
maradnak a ragadozó társaságában.
a speedy escape.
is because they literally move
eltörölnek a föld színéről,
the rest of their ecosystem
and the barnacles and the crabs.
kacslábú rákokra és egyéb rákokra.
small and slimy example
can unleash a cascade effect
az egész ökorendszerre.
that has been studied to date
your ability to sleep well at night.
jó alvóképességükre is hat.
that light pollution is linked to obesity.
hogy az elhízással is kapcsolatos.
contributed to over 70 percent
járult hozzá az elhízáshoz.
hozzá a súlytöbblethez,
about the same amount to excess weight
of artificial light at night
to get breast cancer.
is correlated with types of cancer
increased artificial light at night
és a daganatnövekedés közti
to the super important hormone
over millions of years
or a circadian rhythm.
avagy a cirkadiánritmust.
production is disrupted,
chemical processes are affected,
this chemical balance out of whack,
for Cancer Research
the human circadian rhythm
depression, diabetes,
depresszióval, cukorbetegséggel
és még folytathatnám.
and the list goes on.
about your health.
az egészségükkel.
jól kivilágított helyiségben.
in a brightly lit room.
about death is kind of amazing.
on that wasted light,
that's going out into the universe,
küldött fényt értem,
system for over two years,
több mint kétévi fenntartására
because I really want one
the electric car tax credit.
adókedvezményét is magában foglalja.
with our place in the cosmos
közti kapcsolat elvesztése
scary statistics I can share with you.
ijesztő statisztika.
is doubling roughly every 35 years.
a fényszennyezés.
of the United States
than twilight.
with light pollution.
than we can see with our own eyes.
mert szabad szemmel nem látható.
to just detect this tiny range
észlelje az egész színképből.
or car-to-car radar,
that can talk to each other.
egymással beszélő eszközök.
is putting out strong signals
we're trying to detect
outside Earth,
is most of the universe.
visible and invisible wavelengths.
mind a láthatatlan hullámhosszon.
to deploy tens of thousands of satellites
telepít Föld körüli pályára,
számban haladják meg
the visible stars in the sky,
invisible light back to Earth.
is küldenek a Földre.
to study the universe,
a világmindenséget,
a birthday candle behind it.
észrevenni mögötte.
with any of this modern technology.
or satellites or car radar.
a műholdban, sem az autóradarban.
that talks to my cell phone yet.
amely beszélget a mobilommal.
like everybody else.
mint bárki más.
and you'll hear more about,
és majd hallani fognak,
and they seem intractable.
is not one of these problems.
super simple things you can do.
brighter than you need to.
a szükségesnél erősebb fényt.
don't buy the blue ones.
"natural light" or "daylight,"
vagy "nappali fény" feliratút vesznek,
more night-sky friendly.
előnyösebbé alakítható-e.
at the federal level,
a szövetségi tisztviselőinket,
our view of the invisible universe
világmindenségünk látványát
hogy kénye-kedvére szennyezhessen,
a truly dark night sky,
igazi fekete éjszakai égboltot,
and experience one for yourself.
és tapasztalják meg!
what humanity is losing.
ABOUT THE SPEAKER
Kelsey Johnson - Astrophysicist, writer, educatorKelsey Johnson has spent her life in awe of the universe, and she works to inspire that awe in future generations.
Why you should listen
Kelsey Johnson teaches students both inside and outside of the classroom, using astronomy as a "gateway" science to nurture curiosity and support science literacy. Raised by a single mom, Johnson spent countless nights outside under the stars, where she developed a love for "big picture" questions about the nature of reality and the universe. Influenced by her own experience, she founded the Dark Skies, Bright Kids program in 2009 to enhance science education in under-served areas.
Johnson's curiosity about the cosmos -- and everything in it -- has been the primary driver of her career, leading her to devote her life to learning, exploration and teaching. Her research has tackled questions ranging from "How were the most ancient objects in the universe formed?" to "What can the smallest galaxies tell us about the evolution of the universe?" She has also broken new ground teaching, developing nontraditional courses such as "Unsolved Mysteries in the Universe" and "Math and Beauty in the Cosmos." Johnson is a professor at the University of Virginia and the president of the Astronomical Society of the Pacific.
In 2016, Johnson was appointed by the White House Office of Science and Technology Policy to the Astronomy and Astrophysics Advisory Committee, and in 2017 she was elected to the board of the American Astronomical Society. Her research has received awards including the NSF CAREER Award, a Packard Fellowship and an NSF Distinguished lectureship, as well as being a Kavli Frontiers of Science Fellow. Johnson has also won several teaching awards, and she was recently named as one of four “ACC Distinguished Professors” in the Atlantic Coast Conference of universities. She received an inaugural "Public Service" award from UVA for her work promoting science literacy
Johnson's writing has appeared in Scientific American, Washington Post, the New York Times, Ms. Magazine and The Chronical of Higher Education. She earned her BA in physics from Carleton College, and her MS and PhD in astrophysics from the University of Colorado. She lives in rural Virginia with her family, including three cats and two very large dogs.
Kelsey Johnson | Speaker | TED.com