protests have been held overnight in several cities in iran in response to the execution of three men on friday, who were convicted in connection with the recent wave of mass anti government demonstrations. the executions have been condemned internationally. those are the latest headlines here on bbc news. now on bbc news, it s unspun world withjohn simpson. hello. it is good to see you again at the start of a new season of unspun world. we have been off air since december, and a lot has happened since then. the ukraine walk first. back in december, the optimism of the ukrainian forces was fading, there were fears it would be a bad winter, and the russians were targeting generating stations and heating plants. but, ukrainian engineers worked like crazy to restore power, and anyway, the winter was not that bad. now, some military experts in the west are even daring to suggest that the russian army might soon collapse over the next few months. who knows. president xijinping of
purposes. is used for medical and scientific uroses. 4 ., is used for medical and scientific uroses. ~ ., ., , purposes. but, we know that these thins purposes. but, we know that these things always purposes. but, we know that these things always straight purposes. but, we know that these things always straight over - purposes. but, we know that these things always straight over the i things always straight over the boundaries. should we even have a twinge of anxiety about this? so twinge of anxiety about this? sr many technologies, like ai twinge of anxiety about this? sr many technologies, like aland many technologies, like ai and nuclear physics, they have the potential for terrible harm to humanity. but, the point for us, as a society, is to make sure that they are used for good. of course, the scientific community have a particular obligation to communicate their sides, to say when it can be used for and what it can t be useful. ~ , ., ~ used for and what it can t be u
errors into the virus s genetic code, blocking the virus from replicating. tt code, blocking the virus from replicating- code, blocking the virus from re-rlicatin. , , replicating. it corrupts the gene name of the replicating. it corrupts the gene name of the virus replicating. it corrupts the gene name of the virus so replicating. it corrupts the gene name of the virus so that - replicating. it corrupts the gene name of the virus so that it - replicating. it corrupts the gene i name of the virus so that it cannot replicate that is the beauty. and then even if the virus mutates it could still be useful. people are now talking about this that if we have another coronavirus pandemic in the future this drug will still work for that coronavirus because it is agnostic to variance. t0 for that coronavirus because it is agnostic to variance. agnostic to variance. to our existin: agnostic to variance. to our existing clinic agnostic to variance. to our existing clinic -based - agnost