from the naz dak, i'm jane king, here's to your health. >> google's robot soldier dogs are getting the marine corps. it took five years to develop. they were designed to carry up to 400 pounds of equipment. however, officials say the machines were simply too loud to help troops in battle. >> nasa says orbiting earth is growing and could potentially contain on going plans. nasa says it's tracking about 20,000 pieces bigger than an apple with another half million pieces about the size of a marble. since they travel so fast, the objects can cause significant damage. >> well, coming up, abc 7 news at 4:00 continues. up next, a 93-year-old man becoming an online sensation on youtube. >> and on abc 7 news at 5:00. >> we've had five here in the last ten days. >> from a church to a health department center. >> out with the old and in with the new year just in time for 20 16. google blast may be that. >> find out what happens when mike tyson takes on the hover board. >>> a 93-year-old piano man. >> reporter anne emorich shows you how. >> when he's behind his piano, something special happens. >>