Prosanta Chakrabarty: Four billion years of evolution in six minutes
প্রশান্ত চক্রবর্তী: ছয় মিনিটে বিবর্তনের চার বিলিয়ন বছর
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?
তাহলে এখনো কেন বানরের অস্তিত্ত্ব আছে?
and not a monkey
to understanding where we came from.
evolutionary biology classes in the US,
প্রাণিবিদ্যার বিভাগে পড়াই।
why I call them fish all the time,
কেন আমি তাদের সব সময় মাছ বলে ডাকি,
সুসম্পন্ন করেছি।
by dispelling some hardwired myths,
many of us were taught evolution wrong.
to say "the theory of evolution."
and just like the process itself,
are the ones that survive to this day.
is Darwinian natural selection.
ডারউইনের প্রাকৃতিক নির্বাচন।
that best fit an environment
slowly die off.
and it's a fact.
as much as the "theory of gravity."
স্তনপায়ীর সাথে মিলে যায়।
with other placental mammals,
with other vertebrates,
with all other life on earth.
from different ancestors
how we learn biology early on, is it?
তাই নয় কি?
are primitive things,
followed by reptiles and mammals,
at the end of the line.
portrayed something like this,
to becoming us.
আমাদের হয়ে উঠছে |.
any more than we would become them.
যতটা আমরা তারা হব না।
evolution the right way?
has led to many problems,
অনেক সমস্যার সম্মুখীন হয়েছে,
evolution the right way.
to many convoluted and corrupted views
other life on earth,
পৃথিবীতে অন্যান্য জীবন,
we all came from.
to other single-celled life,
অন্য একক কোশযুক্ত জীবন,
the Archaea and Bacteria
to be here well after us.
multicellularity evolved.
and your plants and your animals.
এবং আপনার গাছপালা
a backbone were fishes.
all vertebrates are fishes,
সমস্ত মেরুদন্ডী প্রাণী হচ্ছে মাছ ,
the mammals and reptiles.
স্তন্যপায়ী এবং সরীসৃপ প্রাণী |
some mammals become primates,
including a variety of human species.
অন্তর্ভুক্তে বিভিন্ন মানুষের প্রজাতি হয়।
a common ancestor with them.
একটি সাধারণ পূর্বপুরুষ।
around us kept evolving:
আমাদের চারপাশে বিকাশিত হচ্ছে:
lots of fish, fish, fish.
প্রচুর মাছ, মাছ, মাছ |
yes, they're my favorite group.
for a few million years.
কয়েক মিলিয়ন বছরের জন্য |
that we see around us today
it's self-centered to think,
এটা স্ব কেন্দ্রীয় ভাবা যে,
for an evolutionary minute,
an unfinished book for sure.
অসমাপ্ত বই নিশ্চিত ।
few pages of each chapter.
শেষ কয়েক পৃষ্ঠা দেখতে পাচ্ছি |
on the eight million species
আট মিলিয়ন প্রজাতি
four billion years of evolution.
বিবর্তনের চার বিলিয়ন বছরের |
on this ancient and gigantic tree of life,
জীবনের এই প্রাচীন এবং বৃহদাকার গাছে আছি,
not just to each other,
শুধু একে অপরের সাথেই নয়,
and our evolutionary ancestors.
আমাদের বিবর্তনবাদী পূর্বপুরুষ সাথে ।
trying to learn, with others,
শিখতে চেষ্টা করছি , অন্যদের সঙ্গে,
who is related to whom.
কে কার সাথে সম্পর্কিত |
as a little fish out of water.
আসা ছোট একটা মাছ হিসাবে |
a lot of learning to do
সম্পর্কে |
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