Picosense LLC is developing the next generation of magnetic sensors. For the past years the company has been working on a low cost, small size and high sensitivity magnetic device working at room temperature, with sub-picoTesla magnetic field detection capability. Picosense's milimeter-scale device has an unprecedented level of sensitivity at low frequencies, low power, low volume and mass, achievable through an inovative integration of two emerging technologies: Magnetoresistive (MR) sensors and Microelectromechanical (MEMS) resonators. At this point, Picosense is pursuing applications in: (i) magnetocardiography (MCG), where we are developing a portable device capable of continuous monitoring of the human heart; (ii) magnetoencephalography (MEG); and also (iii) space science research, where the measurement of in-situ magnetic fields can provide crucial information about the physical processes occurring both within and outside the solar system