An awkward and blundering "cataloging error" by Amazon. com Inc resulted in the deletion of over 57,000 titles from online retailer's main search function on Sunday. Initially terming it as a 'glitch,' Amazon said that the affected titles will soon be restored; but that did not happen even till Monday afternoon.

Washington, Apr 14 : Scientists from The University of Texas Health Science Centre at Houston are developing a robotic device to help recovering stroke and spinal cord injury patients.

The prototypes, brainchild of two faculty members in the Laboratory of Adaptive Technologies at The University of Texas Health Science Centre, are armed with a scissor-like claw that can perform a variety of functions, including moving a glass of water or snatching a pen off the floor.

Washington, April 14 : Scientists at the Burnham Institute for Medical Research (Burnham) have come up with a way to convert human embryonic stem cells (hESCs) into neural progenitor cells, which may be ideal for transplantation.

Lead researcher Dr. Alexei Terskikh says that the new method to create these committed neural precursor cells (C-NPCs) does not produce mutations in the cells, and may be useful for clinical applications.

When the C-NPCs created using the Terskikh protocol were transplanted into mice during an experiment, they became active neurons and integrated into the cortex and olfactory bulb.

Washington, Apr. 14 : Thousands of children gathered at the White House yesterday for the first Easter Egg Roll of the Obama administration, an event with a 131-year tradition that opened its gates to the largest crowd ever.

Presided over by President Obama and US First Lady Michelle Obama, the 2009 Easter Egg Roll revolved around the traditional race that has children pushing -- and in some cases flinging -- decorated eggs across an expanse of White House lawn using large cooking spoons.

It was the day when thousands of people get the chance to stand on the White House grounds.

Washington, Apr 14 : Researchers from University of Utah have found that lack of proper nutrition in the womb may cause permanent genetic changes in the offspring.

In the study conducted using rats, the researchers found that fetuses receiving poor nutrition in the womb become genetically primed to be born into an environment lacking proper nutrition. As a result, the rats were likely to grow to smaller sizes than their normal counterparts.