The lab experiments expanded the perception of the eyes and enabled them to see hues that could not be recreated in reality ...

The new Naxtra-brand batteries would enable an electric vehicle to travel up to 500km (310 miles) on a single charge.

Tesla sank Monday with first-quarter earnings due late Tuesday. Analysts are looking to Elon Musk's conference call answers.

The P/B ratio shows how a stock's market price compares to its book value. It helps gauge whether a stock is undervalued or overvalued relative to its net assets.