Chimpanzees have 'sense of fairness'
Environment


				
				
				

				
				
				
				
				
				
				
				
				
				

				
				

                

				

	
		
			

				
				

				
				

				Mystery of ‘disgusting’ black balls that closed Sydney beaches solved

				
				
			
		
	


				

				
				
				
				
				
				
				

				
				
				
				
	
	
		
			Strange deposits were initially thought to be made of tar – but the truth turned out to be far more grim
		
	


				
                    
    
    
        
    

                

				
				

				
				
				
				
				
				
				
				
				
				

				
			