Prosanta Chakrabarty: Four billion years of evolution in six minutes
Prosanta Chakrabarty: Fyra miljarder år av evolution på sex minuter
Prosanta Chakrabarty studies fish to help explain the evolution of human beings and our planet. Full bio
Double-click the English transcript below to play the video.
why are there still monkeys?
varför finns det fortfarande apor?
and not a monkey
to understanding where we came from.
för att förstå vårt ursprung.
evolutionary biology classes in the US,
kurserna i evolutionsbiologi i USA
why I call them fish all the time,
varför jag alltid kallar dem fiskar,
by dispelling some hardwired myths,
med att ta kål på några seglivade myter,
many of us were taught evolution wrong.
har vi ofta lärt oss fel om evolutionen.
to say "the theory of evolution."
att det heter "evolutionsteorin".
and just like the process itself,
och precis som processen i sig
are the ones that survive to this day.
som har överlevt till våra dagar.
is Darwinian natural selection.
Darwins naturliga urval.
that best fit an environment
organismer som är anpassade till sin miljö
slowly die off.
långsamt dör ut.
and it's a fact.
– och det är ett faktum.
as much as the "theory of gravity."
som "gravitationsteorin".
with other placental mammals,
andra placentadäggdjur,
with other vertebrates,
med andra ryggradsdjur,
with all other life on earth.
med alla andra livsformer på jorden.
hos människor.
from different ancestors
inte bara till oss.
how we learn biology early on, is it?
får lära oss biologi, eller hur?
are primitive things,
är primitiva livsformer
som följdes av kräldjur och däggdjur
followed by reptiles and mammals,
at the end of the line.
som avslutar linjen.
portrayed something like this,
blir det alltid ungefär så här,
to becoming us.
för att bli till oss.
any more than we would become them.
lika lite som vi blev till dem.
evolution the right way?
evolutionen på rätt sätt?
has led to many problems,
har lett till många problem.
evolution the right way.
to many convoluted and corrupted views
många krångliga och felaktiga idéer
other life on earth,
andra livsformer på jorden
we all came from.
som vi alla härstammar från.
to other single-celled life,
till annat encelligt liv,
the Archaea and Bacteria
att arkéer och bakterier,
på hela planeten.
to be here well after us.
långt efter att vi har försvunnit.
multicellularity evolved.
uppstod flercelliga organismer.
and your plants and your animals.
a backbone were fishes.
en ryggrad var fiskarna.
all vertebrates are fishes,
är alla ryggradsdjur fiskar,
the mammals and reptiles.
däggdjuren och kräldjuren.
some mammals become primates,
några däggdjur blir primater,
including a variety of human species.
inklusive flera arter av människor.
a common ancestor with them.
around us kept evolving:
fortsatt att evolvera:
lots of fish, fish, fish.
och så fisk, fisk, fisk.
yes, they're my favorite group.
så är de min favoritgrupp.
dör det också ut.
for a few million years.
i några få miljoner år.
that we see around us today
som vi kan se idag
it's self-centered to think,
det är självupptaget att tänka:
for an evolutionary minute,
i en evolutionär minut,
an unfinished book for sure.
defintivt en ofärdig bok.
few pages of each chapter.
av varje kapitel.
on the eight million species
four billion years of evolution.
fyra miljarder år av evolution.
on this ancient and gigantic tree of life,
på livets uråldriga, gigantiska träd.
not just to each other,
inte bara med varandra,
and our evolutionary ancestors.
och evolutionära förfäder.
trying to learn, with others,
lära mig, tillsammans med andra,
who is related to whom.
vem som är släkt med vem.
as a little fish out of water.
som fiskar på torra land.
a lot of learning to do
ABOUT THE SPEAKER
Prosanta Chakrabarty - IchthyologistProsanta Chakrabarty studies fish to help explain the evolution of human beings and our planet.
Why you should listen
Dr. Prosanta Chakrabarty is an Associate Professor and Curator of Fishes at the Museum of Natural Science and Department of Biological Science at Louisiana State University.
Chakrabarty is a systematist and an ichthyologist studying the evolution and biogeography of both freshwater and marine fishes. His work includes studies of Neotropical (Central and South America, Caribbean) and Indo-West Pacific (Indian and Western Pacific Ocean) fishes. His natural history collecting efforts include trips to Japan, Australia, Taiwan, Madagascar, Panama, Kuwait and many other countries. He has discovered over a dozen new species including new anglerfishes and cavefishes.
The LSU Museum of Natural Science fish collection that Chakrabarty oversees includes nearly half a million fish specimens and nearly 10,000 DNA samples covering most major groups of fishes. He earned his PhD at the University of Michigan and his undergraduate degree is from McGill University in Montreal. He has written two books including A Guide to Academia: Getting into and Surviving Grad School, Postdocs and a Research Job. He is also a former Program Director at the National Science Foundation. He was named a TED Fellow in 2016 and a TED Senior Fellow in 2018.
Prosanta Chakrabarty | Speaker | TED.com