the russian dissident, aleksandr solzhenitsyn.ondering the times which he lived, he wrote i recalled upon to identify briefly the principle positive traits of the entire 20th century, i would be unable to find anything more precise than this. men have forgotten god." those who sought to remake the world by force did not have the last word. because there was something greater at work. through the brutality of war and through four decades of communist rule, as president trump said two years ago in this city, poland and the other captive nations of europe endured a campaign to demolish your freedom, your laws, your history, your identity and your faith. yet you never lost that spirit. your oppressors try to break you , but poland could not be broken. [applause] in june 1979, one of poland's greatest sons returned home as pope john paul ii. history reported that in this very square, he preached as that the polish people could not understand their history or their future apart from the greatest source of their strength and goodness. th

aleksandr for gold. alexander from home made a great contribution to human knowledge and to the geography of the americas. because the scientific vision that he defended has become universal knowledge. into. homebuilt was a supreme that worker who felt at home in many branches of the arts and sciences from biology to physics and from botany to politics and he was always interested in exploring new cultures and fresh ways of looking at the world. we all learned that we as humans are more connected to each other than we are separated and if that message can be communicated up to home bought for him it's because home what was the pioneer who taught people that even centuries ago. a group of artists and computer programmers from peru use virtual reality to experience home both obsession with measuring everything and then attempt to find out everything without missing a thing. it all doesn't look a start up but i think that approach impacts us nowadays with phenomena like globalization and the internet which

it used climate summit aleksandr what exactly do the young activists hope to achieve. well the young activists they want their world leaders to act as if the world as if the world is on fire they want them to stop talking and to start taking action they want stem to and fossil fuel extraction and consumption they want them to prioritise front line communities and workers in the transition to a 100 percent renewable economy and they want them to hold countries organisations and companies most responsible for pollution accountable and there are here to talk about that it was very telling that they opened this summit antonio terrace spoke here as well but he said that he actually wants to listen to the young people to learn how they are trying to tackle the issue what their are doing on the ground and they have been doing a lot. there we'll see what the world leaders decide to do if they hear what the young people who have been saying do you think the massive turnout at yesterday's global fridays for the future protests has increased the urgency that is sort of weighing u

everything is interconnected the ideas our visionary german researcher and explorer aleksandr from humboldt continue to influence us today born 250 years ago on september 4th 769 he travelled the world in search of new experiences and insights he recorded his 5 year journey in central and south america in his diary luckily he invented a waterproof ink so his writings even survived a shipwreck on the orinoco and we can still read them today. the last in our series retracing alexander from humble to footsteps takes us to one of the longest rivers in south america the orinoco. when i came in the 1st time i was making your fall and it was in mason to see all these forests and suddenly you can see the whole thing jumping on the water and i fall in love with it with it all. so i decided to put my life to study the dolphins on the aquatic systems of the arena. this trembling of the air this solitude this wild expanse of the river transports the traveler into adventurous nature. this was fun on board described the orinoco river. on his research expedition he spent 2 and a half months following the

our journey in the footsteps of aleksandr from humble continues to the orinoco river and south america. in the neighboring amazon basin huge fires are raging but not all blazes are necessarily bad for the environment.

our journey in the footsteps of aleksandr from humble continues to the orinoco river in south america. in the neighboring amazon basin huge fires.

iskyan kazushige ito aleksandr valeryerich ivantsov >> lacey bernard ivory virginia may jablonski brianjack brooke alexandra jackman aaron jeremy jacobs ariel louis jacobs jason kyle jacobs michael grady jacobs steven a. jacobson steven d. jacoby ricknauth jaggernauth jake denis jagoda yudh vir singh jain maria jakubiak robert adrien jalbert ernest james gricelda e. james mark steven jardim amy n. jarret muhammadou jawara francois jean-pierre maxima jean-pierre paul edward jeffers john charles jenkins >> and my cousin port authority police officer david. there truly isn't a day that passes that we don't think about you and about the tragic day. we love you and we miss you. >> and my dear aunt marina. though i haven't met you i've been told many great things about you. you're forever in our minds and hearts. love you and miss you dearly. joseph jenkins jr. alan keith jensen prem n. jerath farah jeudy hweidar jian eliezer jimenez jr. luis jimenez jr. charles gregory john nicholas john dennis m. johnson lashawana johnson scott michael johnson william r. johnston allison horstmann jones art