Time is running out to find the missing Malaysia Airlines plane. 

The search in the Indian Ocean is being stepped up today - as ten aircraft and ten ships scour an area of the sea, the size of Poland. 

Among them will be a warship with a black box detector. 

The flight recorder's batteries are due to run out in a matter of days and therefore it's crucial they find the black box soon. 

Several objects found floating yesterday in the search area are not from the plane. 

US Navy Captain Mark Matthews says they'll be searching for any signal: