. >> and i'm livia. here's our top story for this week. >> right now, nearly half a million people around the world are doing exactly what these girl scouts are doing. they're helping to clean up the tons of trash that collect on our beaches every year. >> a lot of people are leaving stuff of the beach. >> it's bad for the animals that live in the ocean. >> so one day a year has been set aside to collect the clutter along our shores. it's part of an international effort organized by the ocean conservancy. >> they've been doing this event -- i think this is the 25th year that, all over the world, there are people cleaning up the beach, volunteers in various communities. >> it's a really good deed to clean up the beach and make your own local beach cleaner. >> look what i found! it's a plastic bag from the water, and i found wrapping and glass. >> most of the trash are things that are used only once, then thrown away, like soda bottles. >> in fact, last year, volunteers collected more than a million bottle

. >> and i'm livia. here's our top story for this week. >> scientists call them "neos" -- near-earth objects. they're asteroids and comets that might someday be on a course to collide with our planet. it might sound like a movie plot, but tyler tells us that nasa takes neos very seriously. in fact, all should. >> so, do you worry that something from outer space may crash into the earth? >> i think the chances are pretty slim. >> sometimes, like when i'm daydreaming in the middle of history class. >> no. i don't worry about something from outer space crashing into the earth. >> i don't worry about it a lot because i feel like we would have had a lot of warning from a lot of people and on the news, so i don't think that it's much to worry about. >> the universe isn't quite as empty as it seems. icy comets and rocky asteroids have been hurtling through space since time began. they're formed and propelled by explosions, collisions, and gravity. and they can be gigantic. this asteroid is 36 miles across. that

. >> and i'm livia. here's our top story for this week. >> in recent years, we have seen people in othcountries struggle to form governments that work. but how much do we know about how oown government operates? a nationwide test found a lot of teens need to learn more. lauren has the story from washington, d.c. >> if i asked you which rights were protected by the first amendment, how would you respond? >> the one right that's protected by the first amendment is freedom of speech. >> correct. in addition to freedom of speech, our constitution protects several other rights -- freedom of the press, religion, peaceful assembly, and the right to petition for grievances. that's considered basic knowledge of civics for american eighth-graders by the national assessment governing board. >> the national assessment governing board is a board that sets the policy for the national assessment of educational progress, otherwise known as naep. the main goal is to ensure that we can measure the knowledge across differe

their place in the world group however they came through a five set epic against alexander on the livia. down in the final set the rough. completed a remarkable comeback seven six six seven seven five three six six for the final school. well what it all means is that russia needs to win their reverse singles rubbers on sunday first up alex the ball of junior faces eoghan meltzer looking for his first win representing russia and it could all come down to the fifth and final robust eagle in its intentions and responded now to. meanwhile the usa have booked their place in the quarterfinals with a comprehensive three nil win over roger federer a switzerland mark dr marty fish winning the doubles rub against federer and stanislav voting in four sets four six six three six three six three the final school. in the final of the series open in paris will be between home favorite marion bartoli reassurance of those programs in the. czech opponent clare as a couple over in straight sets seven six six seven final will be followed up our win over sharapova with a straight sets victory over belgium's

and the livia's of government has declared a state of emergency after severe flooding and mudslides with a saw stars when he left nine people dead and several thousand in this country's president examine that i was himself from a visit to the affected areas the rainy season is expected to continue its second engine to march. on the back of a headlight shortly status. the . move. to. well i mean for the future to keep to the looking glass that what will be the homes of the future where the walls might just be smarter than the residence every day trash protects you from the elements outside and the whole system works to save you money if you shine the spotlight on the latest building projects all around russia technology i'm going to cheer on r.g.p. i'm going to insert. wealthy british style science american past time to visit. all. markets finance scandals find out what's really happening to the global economy with much stronger for a no holds barred look at the global financial headlines tune in to kaiser report on our heat. so you're watching r t the headlines the death of the to a fore

livia, wife of augustus, is carved in egyptian basanite, a stone once reserved for sculptures of deities-- a subtle reference to roman imperial triumph. wealthy residents of the towns beneath vesuvius shared the taste for luxury found in the more affluent villas on the bay. silver mirrors... and cups... bronze statuettes ... and glassware found in pompeii suggest the same desire for elegance in daily life. the city's fever for art was playfully alluded to in the house of the vettii's wall paintings, where busy cupids assist a hard-pressed goldsmith. the painting may also refer to the industriousness of the owners -brothers who bought their way out of slavery and worked their way into the upper reaches of society. but the streets outside were a different matter. pompeii was congested and dirty -raw sewage flowed between the street's cobbled stepping stones. the city's houses were cheek by jowl with taverns, bakeries and other industries and services-including brothels. houses in pompeii turned a blank wall to the congested street and faced inward. strangers were discouraged by guards and