stefan powell, bbc news. laura: to italy, where a 16th-century villa was up for auction today for more than half $1 billion. it has murals by caravaggio, statues bite michelangelo and the same family owned it for more than 400 years. but when it went up for sale this morning, the owners ran into a problem. there were no enters as our correspondent reports. >> it was to be, they thought, the world's most expensive home ever sold when it went under the hammer today. it is a 16th-century villa owned by the late prince and when he died in 2018, his we, his widow, princess rita, she is texan born, was forced to sell it because of an inheritance dispute with his sons. they put it up for auction and it is an extra and replace. we had big limbs into it this morning, it is dripping with treasures. there is a michelangelo statue of the god pan in the garden, and when you go into the small room, there is the only ceiling mural ever painted by caravaggio, a painting of jupiter, neptune and pluto as they reach for the cel

stefan powell, bbc news. lewis: the australian government says it will spend the equivalent of several hundred million u.s. dollars over the next nine years to protect the great rrier reef. it will help to combat things like illegal fishing or the spread of pollution. critics say this not do enough. let's leave you with pictures of an incredible frost formation of a rock. it looks like a fisheye. let's look at this, taken by an unsuspecting photographer in england. they were hoping to get a picture of the sunrise, and he had the feeling he was being watched. that is it, from me. you can get me any time online at @ narrator: funding for this presentation of this program is provided by... man: bdo. accountants and advisors. narrator: funding was also provided by, the freeman foundation. by judy and peter blum kovler foundation; pursuing solutions for america's neglected needs. and by contributions to this pbs station from viewers like you. thank you. ♪ ♪ narrator: you're watching pbs. ♪ da-da-da-duh-da-da

stefan powell, bbc news. the white house says the situation between russia and ukraine is extremely dangerous and that russia could "at any point launch an attack." russia has deployed around 100,000 troops at the border but denies it�*s planning to invade. our diplomatic correspondent james landale reports. russian forces training near the border with ukraine, just some of thousands deployed there since the autumn, raising fears in the west that russia is planning an invasion. fears that are dismissed by moscow. but exacerbated by this — the arrival of russian forces this week in belarus, north of ukraine for what moscow says are joint military exercises to repel external aggressors. but nato�*s secretary general said the risk of conflict was real. the main task now is to prevent a military attack on ukraine, and that�*s exactly why we send a very clear message to russia that if they once again decide to use force against ukraine it will come with a high cost for russia. britain is sending short rang